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        <li class="chapter " data-level="1.1" data-path="../../../">
            
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                        <b>1.1.</b>
                    
                    Introduction
            
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                        <b>1.3.</b>
                    
                    Angular
            
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                        <b>1.3.1.</b>
                    
                    Start
            
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                    Component
            
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                    Mongodb
            
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                    Readme
            
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                    Docker
            
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                    CentOS
            
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                    Install
            
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                    Readme
            
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                    官方Shell
            
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                        <b>1.6.</b>
                    
                    Golang
            
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                        <b>1.6.1.</b>
                    
                    Aop
            
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                        <b>1.6.2.</b>
                    
                    Base
            
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                        <b>1.6.2.1.</b>
                    
                    Copy
            
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                        <b>1.6.2.2.</b>
                    
                    New And Make
            
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                        <b>1.6.2.3.</b>
                    
                    Readme
            
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                        <b>1.6.2.4.</b>
                    
                    Reflect
            
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                        <b>1.6.2.5.</b>
                    
                    String
            
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                        <b>1.6.2.6.</b>
                    
                    Tag
            
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                        <b>1.6.3.</b>
                    
                    Clouser
            
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                        <b>1.6.4.</b>
                    
                    Err 优雅处理
            
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                        <b>1.6.5.</b>
                    
                    Go Module 2
            
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                        <b>1.6.6.</b>
                    
                    Go Mod
            
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                        <b>1.6.7.</b>
                    
                    Gocraftwork
            
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                        <b>1.6.8.</b>
                    
                    Oauth
            
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                        <b>1.6.9.</b>
                    
                    Readme
            
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        <li class="chapter " data-level="1.6.10" data-path="../../golang/swagger.html">
            
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                        <b>1.6.10.</b>
                    
                    Swagger
            
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                        <b>1.6.11.</b>
                    
                    Tls
            
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                        <b>1.6.12.</b>
                    
                    代码走读
            
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                        <b>1.6.12.1.</b>
                    
                    2020.5.26
            
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        <li class="chapter " data-level="1.6.13" data-path="../../golang/任务队列/">
            
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                        <b>1.6.13.</b>
                    
                    任务队列
            
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                        <b>1.6.13.1.</b>
                    
                    Gocraft Worker
            
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                        <b>1.6.13.2.</b>
                    
                    Readme
            
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                        <b>1.6.14.</b>
                    
                    参数校验
            
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        <li class="chapter " data-level="1.7" data-path="../../istio/">
            
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                        <b>1.7.</b>
                    
                    Istio
            
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                        <b>1.7.1.</b>
                    
                    Readme
            
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                        <b>1.7.2.</b>
                    
                    Virtualservice
            
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                        <b>1.8.</b>
                    
                    Java
            
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                        <b>1.8.1.</b>
                    
                    Jvm
            
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                        <b>1.8.2.</b>
                    
                    Typescript
            
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        <li class="chapter " data-level="1.9" data-path="../">
            
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                        <b>1.9.</b>
                    
                    Kubernetes
            
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                        <b>1.9.1.</b>
                    
                    APIService
            
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                        <b>1.9.2.</b>
                    
                    CAK
            
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        <li class="chapter " data-level="1.9.3" data-path="../Deployment 的实现原理.html">
            
                <a href="../Deployment 的实现原理.html">
            
                    
                        <b>1.9.3.</b>
                    
                    Deployment 的实现原理
            
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        <li class="chapter " data-level="1.9.4" data-path="./">
            
                <a href="./">
            
                    
                        <b>1.9.4.</b>
                    
                    K8s源码
            
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        <li class="chapter " data-level="1.9.4.1" data-path="calico 源码分析.html">
            
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                        <b>1.9.4.1.</b>
                    
                    Calico 源码分析
            
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        <li class="chapter " data-level="1.9.4.2" data-path="garbage collector controller 源码分析.html">
            
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                        <b>1.9.4.2.</b>
                    
                    Garbage Collector Controller 源码分析
            
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        <li class="chapter " data-level="1.9.4.3" data-path="job.html">
            
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                        <b>1.9.4.3.</b>
                    
                    Job
            
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                        <b>1.9.4.4.</b>
                    
                    Kube Proxy Iptables
            
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        <li class="chapter " data-level="1.9.4.5" data-path="kube-proxy-ipvs.html">
            
                <a href="kube-proxy-ipvs.html">
            
                    
                        <b>1.9.4.5.</b>
                    
                    Kube Proxy Ipvs
            
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        <li class="chapter " data-level="1.9.4.6" data-path="kube-proxy.html">
            
                <a href="kube-proxy.html">
            
                    
                        <b>1.9.4.6.</b>
                    
                    Kube Proxy
            
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        <li class="chapter " data-level="1.9.4.7" data-path="kubectl-exec.html">
            
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                        <b>1.9.4.7.</b>
                    
                    Kubectl Exec
            
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                        <b>1.9.4.8.</b>
                    
                    Kubectl源码阅读1
            
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                        <b>1.9.4.9.</b>
                    
                    Kubectl源码阅读2
            
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                        <b>1.9.4.10.</b>
                    
                    Readme
            
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                        <b>1.9.4.11.</b>
                    
                    Schedule
            
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        <li class="chapter " data-level="1.9.4.12" data-path="scheme.html">
            
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                        <b>1.9.4.12.</b>
                    
                    Scheme
            
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                        <b>1.9.4.13.</b>
                    
                    调度队列
            
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        <li class="chapter " data-level="1.9.5" data-path="../Karmada.html">
            
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                        <b>1.9.5.</b>
                    
                    Karmada
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.6" data-path="../Pixie.html">
            
                <a href="../Pixie.html">
            
                    
                        <b>1.9.6.</b>
                    
                    Pixie
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.7" data-path="../admission access.html">
            
                <a href="../admission access.html">
            
                    
                        <b>1.9.7.</b>
                    
                    Admission Access
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.8" data-path="../ccm.html">
            
                <a href="../ccm.html">
            
                    
                        <b>1.9.8.</b>
                    
                    Ccm
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.9" data-path="../client-go.html">
            
                <a href="../client-go.html">
            
                    
                        <b>1.9.9.</b>
                    
                    Client Go
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.10" data-path="../command.html">
            
                <a href="../command.html">
            
                    
                        <b>1.9.10.</b>
                    
                    Command
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.11" data-path="../controller.html">
            
                <a href="../controller.html">
            
                    
                        <b>1.9.11.</b>
                    
                    Controller
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.12" data-path="../copy docker config.html">
            
                <a href="../copy docker config.html">
            
                    
                        <b>1.9.12.</b>
                    
                    Copy Docker Config
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.13" data-path="../etcd-operation.html">
            
                <a href="../etcd-operation.html">
            
                    
                        <b>1.9.13.</b>
                    
                    Etcd Operation
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.14" data-path="../gc.html">
            
                <a href="../gc.html">
            
                    
                        <b>1.9.14.</b>
                    
                    Gc
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.15" data-path="../helm chart.html">
            
                <a href="../helm chart.html">
            
                    
                        <b>1.9.15.</b>
                    
                    Helm Chart
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.16" data-path="../helm.html">
            
                <a href="../helm.html">
            
                    
                        <b>1.9.16.</b>
                    
                    Helm
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.17" >
            
                <span>
            
                    
                        <b>1.9.17.</b>
                    
                    Helm
            
                </span>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.9.17.1" data-path="../helm/charts.html">
            
                <a href="../helm/charts.html">
            
                    
                        <b>1.9.17.1.</b>
                    
                    Charts
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.17.2" data-path="../helm/helm 钩子函数.html">
            
                <a href="../helm/helm 钩子函数.html">
            
                    
                        <b>1.9.17.2.</b>
                    
                    Helm 钩子函数
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.17.3" data-path="../helm/helm-operator.html">
            
                <a href="../helm/helm-operator.html">
            
                    
                        <b>1.9.17.3.</b>
                    
                    Helm Operator
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.17.4" data-path="../helm/文档查询.html">
            
                <a href="../helm/文档查询.html">
            
                    
                        <b>1.9.17.4.</b>
                    
                    文档查询
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.17.5" data-path="../helm/语法.html">
            
                <a href="../helm/语法.html">
            
                    
                        <b>1.9.17.5.</b>
                    
                    语法
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.9.18" data-path="../install.html">
            
                <a href="../install.html">
            
                    
                        <b>1.9.18.</b>
                    
                    Install
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.19" data-path="../istio-inject.html">
            
                <a href="../istio-inject.html">
            
                    
                        <b>1.9.19.</b>
                    
                    Istio Inject
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.20" >
            
                <span>
            
                    
                        <b>1.9.20.</b>
                    
                    KubeEdge
            
                </span>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.21" data-path="../kuber-apiserver-flag.html">
            
                <a href="../kuber-apiserver-flag.html">
            
                    
                        <b>1.9.21.</b>
                    
                    Kuber Apiserver Flag
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.22" data-path="../kubernetes-client.html">
            
                <a href="../kubernetes-client.html">
            
                    
                        <b>1.9.22.</b>
                    
                    Kubernetes Client
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.23" data-path="../kubernetes灾备.html">
            
                <a href="../kubernetes灾备.html">
            
                    
                        <b>1.9.23.</b>
                    
                    Kubernetes灾备
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.24" data-path="../kubesphere/">
            
                <a href="../kubesphere/">
            
                    
                        <b>1.9.24.</b>
                    
                    Kubesphere
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.9.24.1" data-path="../kubesphere/helm.html">
            
                <a href="../kubesphere/helm.html">
            
                    
                        <b>1.9.24.1.</b>
                    
                    Helm
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.24.2" data-path="../kubesphere/readme.html">
            
                <a href="../kubesphere/readme.html">
            
                    
                        <b>1.9.24.2.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.9.25" data-path="../kubevela/">
            
                <a href="../kubevela/">
            
                    
                        <b>1.9.25.</b>
                    
                    Kubevela
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.9.25.1" data-path="../kubevela/KubeVela 功能.html">
            
                <a href="../kubevela/KubeVela 功能.html">
            
                    
                        <b>1.9.25.1.</b>
                    
                    KubeVela 功能
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.25.2" data-path="../kubevela/cue.html">
            
                <a href="../kubevela/cue.html">
            
                    
                        <b>1.9.25.2.</b>
                    
                    Cue
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.25.3" data-path="../kubevela/oam.html">
            
                <a href="../kubevela/oam.html">
            
                    
                        <b>1.9.25.3.</b>
                    
                    Oam
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.25.4" data-path="../kubevela/readme.html">
            
                <a href="../kubevela/readme.html">
            
                    
                        <b>1.9.25.4.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.25.5" data-path="../kubevela/rollout design.html">
            
                <a href="../kubevela/rollout design.html">
            
                    
                        <b>1.9.25.5.</b>
                    
                    Rollout Design
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.25.6" data-path="../kubevela/vela run.html">
            
                <a href="../kubevela/vela run.html">
            
                    
                        <b>1.9.25.6.</b>
                    
                    Vela Run
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.25.7" data-path="../kubevela/vela up.html">
            
                <a href="../kubevela/vela up.html">
            
                    
                        <b>1.9.25.7.</b>
                    
                    Vela Up
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.25.8" data-path="../kubevela/vela-cluster.html">
            
                <a href="../kubevela/vela-cluster.html">
            
                    
                        <b>1.9.25.8.</b>
                    
                    Vela Cluster
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.25.9" data-path="../kubevela/vela-helm.html">
            
                <a href="../kubevela/vela-helm.html">
            
                    
                        <b>1.9.25.9.</b>
                    
                    Vela Helm
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.25.10" data-path="../kubevela/vela-pk-oam.html">
            
                <a href="../kubevela/vela-pk-oam.html">
            
                    
                        <b>1.9.25.10.</b>
                    
                    Vela Pk Oam
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.9.26" data-path="../mk-cert.html">
            
                <a href="../mk-cert.html">
            
                    
                        <b>1.9.26.</b>
                    
                    Mk Cert
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.27" data-path="../open_swagger-ui.html">
            
                <a href="../open_swagger-ui.html">
            
                    
                        <b>1.9.27.</b>
                    
                    Open Swagger Ui
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.28" data-path="../readme.html">
            
                <a href="../readme.html">
            
                    
                        <b>1.9.28.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.29" data-path="../task/">
            
                <a href="../task/">
            
                    
                        <b>1.9.29.</b>
                    
                    Task
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.9.29.1" data-path="../task/HPA.html">
            
                <a href="../task/HPA.html">
            
                    
                        <b>1.9.29.1.</b>
                    
                    HPA
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.29.2" data-path="../task/kubectl patch.html">
            
                <a href="../task/kubectl patch.html">
            
                    
                        <b>1.9.29.2.</b>
                    
                    Kubectl Patch
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.29.3" data-path="../task/pod 信息注入.html">
            
                <a href="../task/pod 信息注入.html">
            
                    
                        <b>1.9.29.3.</b>
                    
                    Pod 信息注入
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.29.4" data-path="../task/pod 垂直扩缩容.html">
            
                <a href="../task/pod 垂直扩缩容.html">
            
                    
                        <b>1.9.29.4.</b>
                    
                    Pod 垂直扩缩容
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.29.5" data-path="../task/readme.html">
            
                <a href="../task/readme.html">
            
                    
                        <b>1.9.29.5.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.29.6" data-path="../task/server-side-apply.html">
            
                <a href="../task/server-side-apply.html">
            
                    
                        <b>1.9.29.6.</b>
                    
                    Server Side Apply
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.29.7" data-path="../task/准入控制.html">
            
                <a href="../task/准入控制.html">
            
                    
                        <b>1.9.29.7.</b>
                    
                    准入控制
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.29.8" data-path="../task/聚合api.html">
            
                <a href="../task/聚合api.html">
            
                    
                        <b>1.9.29.8.</b>
                    
                    聚合Api
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.29.9" data-path="../task/资源预留配置.html">
            
                <a href="../task/资源预留配置.html">
            
                    
                        <b>1.9.29.9.</b>
                    
                    资源预留配置
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.9.30" data-path="../webhook.html">
            
                <a href="../webhook.html">
            
                    
                        <b>1.9.30.</b>
                    
                    Webhook
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.31" data-path="../一致性认证.html">
            
                <a href="../一致性认证.html">
            
                    
                        <b>1.9.31.</b>
                    
                    一致性认证
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.32" data-path="../专利名词.html">
            
                <a href="../专利名词.html">
            
                    
                        <b>1.9.32.</b>
                    
                    专利名词
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.33" data-path="../删除namespace.html">
            
                <a href="../删除namespace.html">
            
                    
                        <b>1.9.33.</b>
                    
                    删除Namespace
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.34" data-path="../简化多集群.html">
            
                <a href="../简化多集群.html">
            
                    
                        <b>1.9.34.</b>
                    
                    简化多集群
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.35" data-path="../网络插件/">
            
                <a href="../网络插件/">
            
                    
                        <b>1.9.35.</b>
                    
                    网络插件
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.9.35.1" data-path="../网络插件/calico.html">
            
                <a href="../网络插件/calico.html">
            
                    
                        <b>1.9.35.1.</b>
                    
                    Calico
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.35.2" data-path="../网络插件/cilium.html">
            
                <a href="../网络插件/cilium.html">
            
                    
                        <b>1.9.35.2.</b>
                    
                    Cilium
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.35.3" data-path="../网络插件/ebpf.html">
            
                <a href="../网络插件/ebpf.html">
            
                    
                        <b>1.9.35.3.</b>
                    
                    Ebpf
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.35.4" data-path="../网络插件/readme.html">
            
                <a href="../网络插件/readme.html">
            
                    
                        <b>1.9.35.4.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.9.36" data-path="../镜像/">
            
                <a href="../镜像/">
            
                    
                        <b>1.9.36.</b>
                    
                    镜像
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.9.36.1" data-path="../镜像/Containerd Stargz Snapshotter.html">
            
                <a href="../镜像/Containerd Stargz Snapshotter.html">
            
                    
                        <b>1.9.36.1.</b>
                    
                    Containerd Stargz Snapshotter
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.36.2" data-path="../镜像/OCI.html">
            
                <a href="../镜像/OCI.html">
            
                    
                        <b>1.9.36.2.</b>
                    
                    OCI
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.36.3" data-path="../镜像/harbor/">
            
                <a href="../镜像/harbor/">
            
                    
                        <b>1.9.36.3.</b>
                    
                    Harbor
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.9.36.3.1" data-path="../镜像/harbor/readme.html">
            
                <a href="../镜像/harbor/readme.html">
            
                    
                        <b>1.9.36.3.1.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.9.36.4" data-path="../镜像/readme.html">
            
                <a href="../镜像/readme.html">
            
                    
                        <b>1.9.36.4.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.36.5" data-path="../镜像/自动构建镜像.html">
            
                <a href="../镜像/自动构建镜像.html">
            
                    
                        <b>1.9.36.5.</b>
                    
                    自动构建镜像
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.36.6" data-path="../镜像/镜像加速方案.html">
            
                <a href="../镜像/镜像加速方案.html">
            
                    
                        <b>1.9.36.6.</b>
                    
                    镜像加速方案
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.36.7" data-path="../镜像/镜像延迟加载技术解析.html">
            
                <a href="../镜像/镜像延迟加载技术解析.html">
            
                    
                        <b>1.9.36.7.</b>
                    
                    镜像延迟加载技术解析
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.10" data-path="../../math/">
            
                <a href="../../math/">
            
                    
                        <b>1.10.</b>
                    
                    Math
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.10.1" data-path="../../math/readme.html">
            
                <a href="../../math/readme.html">
            
                    
                        <b>1.10.1.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.10.2" data-path="../../math/泊松分布.html">
            
                <a href="../../math/泊松分布.html">
            
                    
                        <b>1.10.2.</b>
                    
                    泊松分布
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.11" data-path="../../效率/">
            
                <a href="../../效率/">
            
                    
                        <b>1.11.</b>
                    
                    效率
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.11.1" data-path="../../效率/cat.html">
            
                <a href="../../效率/cat.html">
            
                    
                        <b>1.11.1.</b>
                    
                    Cat
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.2" data-path="../../效率/docker volume clean.html">
            
                <a href="../../效率/docker volume clean.html">
            
                    
                        <b>1.11.2.</b>
                    
                    Docker Volume Clean
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.3" data-path="../../效率/git book.html">
            
                <a href="../../效率/git book.html">
            
                    
                        <b>1.11.3.</b>
                    
                    Git Book
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.4" data-path="../../效率/git.html">
            
                <a href="../../效率/git.html">
            
                    
                        <b>1.11.4.</b>
                    
                    Git
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.5" data-path="../../效率/linux command.html">
            
                <a href="../../效率/linux command.html">
            
                    
                        <b>1.11.5.</b>
                    
                    Linux Command
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.6" data-path="../../效率/linux 内核.html">
            
                <a href="../../效率/linux 内核.html">
            
                    
                        <b>1.11.6.</b>
                    
                    Linux 内核
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.7" data-path="../../效率/macos path.html">
            
                <a href="../../效率/macos path.html">
            
                    
                        <b>1.11.7.</b>
                    
                    Macos Path
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.8" data-path="../../效率/nfs.html">
            
                <a href="../../效率/nfs.html">
            
                    
                        <b>1.11.8.</b>
                    
                    Nfs
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.9" data-path="../../效率/nginx.html">
            
                <a href="../../效率/nginx.html">
            
                    
                        <b>1.11.9.</b>
                    
                    Nginx
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.10" data-path="../../效率/nginx2.html">
            
                <a href="../../效率/nginx2.html">
            
                    
                        <b>1.11.10.</b>
                    
                    Nginx2
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.11" data-path="../../效率/oauth2.html">
            
                <a href="../../效率/oauth2.html">
            
                    
                        <b>1.11.11.</b>
                    
                    Oauth2
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.12" data-path="../../效率/ovftool.html">
            
                <a href="../../效率/ovftool.html">
            
                    
                        <b>1.11.12.</b>
                    
                    Ovftool
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.13" data-path="../../效率/readme.html">
            
                <a href="../../效率/readme.html">
            
                    
                        <b>1.11.13.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.14" data-path="../../效率/sed.html">
            
                <a href="../../效率/sed.html">
            
                    
                        <b>1.11.14.</b>
                    
                    Sed
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.15" data-path="../../效率/shell_judge.html">
            
                <a href="../../效率/shell_judge.html">
            
                    
                        <b>1.11.15.</b>
                    
                    Shell Judge
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.16" data-path="../../效率/sshpass.html">
            
                <a href="../../效率/sshpass.html">
            
                    
                        <b>1.11.16.</b>
                    
                    Sshpass
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.17" data-path="../../效率/telepresence.html">
            
                <a href="../../效率/telepresence.html">
            
                    
                        <b>1.11.17.</b>
                    
                    Telepresence
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.18" data-path="../../效率/typora.html">
            
                <a href="../../效率/typora.html">
            
                    
                        <b>1.11.18.</b>
                    
                    Typora
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.19" data-path="../../效率/url encode.html">
            
                <a href="../../效率/url encode.html">
            
                    
                        <b>1.11.19.</b>
                    
                    Url Encode
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.20" data-path="../../效率/vim.html">
            
                <a href="../../效率/vim.html">
            
                    
                        <b>1.11.20.</b>
                    
                    Vim
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.21" data-path="../../效率/yum.html">
            
                <a href="../../效率/yum.html">
            
                    
                        <b>1.11.21.</b>
                    
                    Yum
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.22" data-path="../../效率/内网穿透.html">
            
                <a href="../../效率/内网穿透.html">
            
                    
                        <b>1.11.22.</b>
                    
                    内网穿透
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.23" data-path="../../效率/科学上网.html">
            
                <a href="../../效率/科学上网.html">
            
                    
                        <b>1.11.23.</b>
                    
                    科学上网
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.24" data-path="../../效率/证书制作.html">
            
                <a href="../../效率/证书制作.html">
            
                    
                        <b>1.11.24.</b>
                    
                    证书制作
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.12" >
            
                <span>
            
                    
                        <b>1.12.</b>
                    
                    杂谈
            
                </span>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.12.1" data-path="../../杂谈/论好文章和烂文章.html">
            
                <a href="../../杂谈/论好文章和烂文章.html">
            
                    
                        <b>1.12.1.</b>
                    
                    论好文章和烂文章
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.13" data-path="../../测试/">
            
                <a href="../../测试/">
            
                    
                        <b>1.13.</b>
                    
                    测试
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.13.1" data-path="../../测试/ginkgo/">
            
                <a href="../../测试/ginkgo/">
            
                    
                        <b>1.13.1.</b>
                    
                    Ginkgo
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.13.1.1" data-path="../../测试/ginkgo/ginkgo.html">
            
                <a href="../../测试/ginkgo/ginkgo.html">
            
                    
                        <b>1.13.1.1.</b>
                    
                    Ginkgo
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.13.1.2" data-path="../../测试/ginkgo/ginkgo_cmd.html">
            
                <a href="../../测试/ginkgo/ginkgo_cmd.html">
            
                    
                        <b>1.13.1.2.</b>
                    
                    Ginkgo Cmd
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.13.1.3" data-path="../../测试/ginkgo/readme.html">
            
                <a href="../../测试/ginkgo/readme.html">
            
                    
                        <b>1.13.1.3.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.13.2" data-path="../../测试/golang-test.html">
            
                <a href="../../测试/golang-test.html">
            
                    
                        <b>1.13.2.</b>
                    
                    Golang Test
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.13.3" data-path="../../测试/http测试.html">
            
                <a href="../../测试/http测试.html">
            
                    
                        <b>1.13.3.</b>
                    
                    Http测试
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.13.4" data-path="../../测试/readme.html">
            
                <a href="../../测试/readme.html">
            
                    
                        <b>1.13.4.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.13.5" data-path="../../测试/其他功能.html">
            
                <a href="../../测试/其他功能.html">
            
                    
                        <b>1.13.5.</b>
                    
                    其他功能
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.13.6" data-path="../../测试/单元测试.html">
            
                <a href="../../测试/单元测试.html">
            
                    
                        <b>1.13.6.</b>
                    
                    单元测试
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.13.7" data-path="../../测试/单元测试2.html">
            
                <a href="../../测试/单元测试2.html">
            
                    
                        <b>1.13.7.</b>
                    
                    单元测试2
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.13.8" data-path="../../测试/基准测试.html">
            
                <a href="../../测试/基准测试.html">
            
                    
                        <b>1.13.8.</b>
                    
                    基准测试
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.13.9" data-path="../../测试/子测试与子基准测试.html">
            
                <a href="../../测试/子测试与子基准测试.html">
            
                    
                        <b>1.13.9.</b>
                    
                    子测试与子基准测试
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.13.10" data-path="../../测试/并行测试.html">
            
                <a href="../../测试/并行测试.html">
            
                    
                        <b>1.13.10.</b>
                    
                    并行测试
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.13.11" data-path="../../测试/质量检查/">
            
                <a href="../../测试/质量检查/">
            
                    
                        <b>1.13.11.</b>
                    
                    质量检查
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.13.11.1" data-path="../../测试/质量检查/Sonar.html">
            
                <a href="../../测试/质量检查/Sonar.html">
            
                    
                        <b>1.13.11.1.</b>
                    
                    Sonar
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.13.11.2" data-path="../../测试/质量检查/go_lint.html">
            
                <a href="../../测试/质量检查/go_lint.html">
            
                    
                        <b>1.13.11.2.</b>
                    
                    Go Lint
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.13.11.3" data-path="../../测试/质量检查/readme.html">
            
                <a href="../../测试/质量检查/readme.html">
            
                    
                        <b>1.13.11.3.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.14" data-path="../../规范/">
            
                <a href="../../规范/">
            
                    
                        <b>1.14.</b>
                    
                    规范
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.14.1" data-path="../../规范/CodeReviewComments.html">
            
                <a href="../../规范/CodeReviewComments.html">
            
                    
                        <b>1.14.1.</b>
                    
                    CodeReviewComments
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.14.2" data-path="../../规范/git规范.html">
            
                <a href="../../规范/git规范.html">
            
                    
                        <b>1.14.2.</b>
                    
                    Git规范
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.14.3" data-path="../../规范/golang 代码规范.html">
            
                <a href="../../规范/golang 代码规范.html">
            
                    
                        <b>1.14.3.</b>
                    
                    Golang 代码规范
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.14.4" data-path="../../规范/readme.html">
            
                <a href="../../规范/readme.html">
            
                    
                        <b>1.14.4.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.14.5" data-path="../../规范/代码走读.html">
            
                <a href="../../规范/代码走读.html">
            
                    
                        <b>1.14.5.</b>
                    
                    代码走读
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.15" data-path="../../设计模式/">
            
                <a href="../../设计模式/">
            
                    
                        <b>1.15.</b>
                    
                    设计模式
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.15.1" data-path="../../设计模式/readme.html">
            
                <a href="../../设计模式/readme.html">
            
                    
                        <b>1.15.1.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.2" data-path="../../设计模式/创建模型/">
            
                <a href="../../设计模式/创建模型/">
            
                    
                        <b>1.15.2.</b>
                    
                    创建模型
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.15.2.1" data-path="../../设计模式/创建模型/readme.html">
            
                <a href="../../设计模式/创建模型/readme.html">
            
                    
                        <b>1.15.2.1.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.2.2" data-path="../../设计模式/创建模型/创建者模型.html">
            
                <a href="../../设计模式/创建模型/创建者模型.html">
            
                    
                        <b>1.15.2.2.</b>
                    
                    创建者模型
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.2.3" data-path="../../设计模式/创建模型/单例模式.html">
            
                <a href="../../设计模式/创建模型/单例模式.html">
            
                    
                        <b>1.15.2.3.</b>
                    
                    单例模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.2.4" data-path="../../设计模式/创建模型/原型模式.html">
            
                <a href="../../设计模式/创建模型/原型模式.html">
            
                    
                        <b>1.15.2.4.</b>
                    
                    原型模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.2.5" data-path="../../设计模式/创建模型/工厂方法.html">
            
                <a href="../../设计模式/创建模型/工厂方法.html">
            
                    
                        <b>1.15.2.5.</b>
                    
                    工厂方法
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.2.6" data-path="../../设计模式/创建模型/抽象工厂.html">
            
                <a href="../../设计模式/创建模型/抽象工厂.html">
            
                    
                        <b>1.15.2.6.</b>
                    
                    抽象工厂
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.2.7" data-path="../../设计模式/创建模型/简单工厂.html">
            
                <a href="../../设计模式/创建模型/简单工厂.html">
            
                    
                        <b>1.15.2.7.</b>
                    
                    简单工厂
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.15.3" data-path="../../设计模式/结构型模型/">
            
                <a href="../../设计模式/结构型模型/">
            
                    
                        <b>1.15.3.</b>
                    
                    结构型模型
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.15.3.1" data-path="../../设计模式/结构型模型/readme.html">
            
                <a href="../../设计模式/结构型模型/readme.html">
            
                    
                        <b>1.15.3.1.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.3.2" data-path="../../设计模式/结构型模型/享元模式.html">
            
                <a href="../../设计模式/结构型模型/享元模式.html">
            
                    
                        <b>1.15.3.2.</b>
                    
                    享元模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.3.3" data-path="../../设计模式/结构型模型/代理模式.html">
            
                <a href="../../设计模式/结构型模型/代理模式.html">
            
                    
                        <b>1.15.3.3.</b>
                    
                    代理模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.3.4" data-path="../../设计模式/结构型模型/外观模式.html">
            
                <a href="../../设计模式/结构型模型/外观模式.html">
            
                    
                        <b>1.15.3.4.</b>
                    
                    外观模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.3.5" data-path="../../设计模式/结构型模型/桥模式.html">
            
                <a href="../../设计模式/结构型模型/桥模式.html">
            
                    
                        <b>1.15.3.5.</b>
                    
                    桥模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.3.6" data-path="../../设计模式/结构型模型/组合模式.html">
            
                <a href="../../设计模式/结构型模型/组合模式.html">
            
                    
                        <b>1.15.3.6.</b>
                    
                    组合模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.3.7" data-path="../../设计模式/结构型模型/装饰模式.html">
            
                <a href="../../设计模式/结构型模型/装饰模式.html">
            
                    
                        <b>1.15.3.7.</b>
                    
                    装饰模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.3.8" data-path="../../设计模式/结构型模型/适配器模式.html">
            
                <a href="../../设计模式/结构型模型/适配器模式.html">
            
                    
                        <b>1.15.3.8.</b>
                    
                    适配器模式
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.15.4" data-path="../../设计模式/行为型模型/">
            
                <a href="../../设计模式/行为型模型/">
            
                    
                        <b>1.15.4.</b>
                    
                    行为型模型
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.15.4.1" data-path="../../设计模式/行为型模型/readme.html">
            
                <a href="../../设计模式/行为型模型/readme.html">
            
                    
                        <b>1.15.4.1.</b>
                    
                    Readme
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.4.2" data-path="../../设计模式/行为型模型/中介者模式.html">
            
                <a href="../../设计模式/行为型模型/中介者模式.html">
            
                    
                        <b>1.15.4.2.</b>
                    
                    中介者模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.4.3" data-path="../../设计模式/行为型模型/命令模式.html">
            
                <a href="../../设计模式/行为型模型/命令模式.html">
            
                    
                        <b>1.15.4.3.</b>
                    
                    命令模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.4.4" data-path="../../设计模式/行为型模型/备忘录模式.html">
            
                <a href="../../设计模式/行为型模型/备忘录模式.html">
            
                    
                        <b>1.15.4.4.</b>
                    
                    备忘录模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.4.5" data-path="../../设计模式/行为型模型/模板方法模式.html">
            
                <a href="../../设计模式/行为型模型/模板方法模式.html">
            
                    
                        <b>1.15.4.5.</b>
                    
                    模板方法模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.4.6" data-path="../../设计模式/行为型模型/状态模式.html">
            
                <a href="../../设计模式/行为型模型/状态模式.html">
            
                    
                        <b>1.15.4.6.</b>
                    
                    状态模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.4.7" data-path="../../设计模式/行为型模型/策略模式.html">
            
                <a href="../../设计模式/行为型模型/策略模式.html">
            
                    
                        <b>1.15.4.7.</b>
                    
                    策略模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.4.8" data-path="../../设计模式/行为型模型/职责链模式.html">
            
                <a href="../../设计模式/行为型模型/职责链模式.html">
            
                    
                        <b>1.15.4.8.</b>
                    
                    职责链模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.4.9" data-path="../../设计模式/行为型模型/观察者模式.html">
            
                <a href="../../设计模式/行为型模型/观察者模式.html">
            
                    
                        <b>1.15.4.9.</b>
                    
                    观察者模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.15.4.10" data-path="../../设计模式/行为型模型/解释器模式.html">
            
                <a href="../../设计模式/行为型模型/解释器模式.html">
            
                    
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    <h1>
        <i class="fa fa-circle-o-notch fa-spin"></i>
        <a href="../../.." >Schedule</a>
    </h1>
</div>




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                                <section class="normal markdown-section">
                                
                                <!-- toc -->
<ul>
<li><a href="#kubernetes%E8%B5%84%E6%BA%90%E8%B0%83%E5%BA%A6scheduler">Kubernetes&#x8D44;&#x6E90;&#x8C03;&#x5EA6;&#x2014;&#x2014;scheduler</a></li>
<li><a href="#%E7%AE%80%E4%BB%8B">&#x7B80;&#x4ECB;</a></li>
<li><a href="#%E5%B7%A5%E4%BD%9C%E6%B5%81%E7%A8%8B">&#x5DE5;&#x4F5C;&#x6D41;&#x7A0B;</a></li>
<li><a href="#kubernetes-%E8%B5%84%E6%BA%90%E6%A8%A1%E5%9E%8B%E4%B8%8E%E8%B5%84%E6%BA%90%E7%AE%A1%E7%90%86">Kubernetes &#x8D44;&#x6E90;&#x6A21;&#x578B;&#x4E0E;&#x8D44;&#x6E90;&#x7BA1;&#x7406;</a><ul>
<li><a href="#request-and-limit">request and limit</a></li>
<li><a href="#request-limit-%E5%85%B3%E7%B3%BB--qos--%E9%A9%B1%E9%80%90%E7%AD%96%E7%95%A5">request limit &#x5173;&#x7CFB; ==&gt; QoS ==&gt; &#x9A71;&#x9010;&#x7B56;&#x7565;</a></li>
</ul>
</li>
<li><a href="#kubernetes-%E5%9F%BA%E4%BA%8E%E8%B5%84%E6%BA%90%E7%9A%84%E8%B0%83%E5%BA%A6">Kubernetes &#x57FA;&#x4E8E;&#x8D44;&#x6E90;&#x7684;&#x8C03;&#x5EA6;</a><ul>
<li><a href="#%E8%B0%93%E8%AF%8D%E5%92%8C%E4%BC%98%E5%85%88%E7%BA%A7%E7%AE%97%E6%B3%95">&#x8C13;&#x8BCD;&#x548C;&#x4F18;&#x5148;&#x7EA7;&#x7B97;&#x6CD5;</a></li>
<li><a href="#predicate">Predicate</a></li>
<li><a href="#priorities">Priorities</a></li>
<li><a href="#%E4%BC%98%E5%85%88%E7%BA%A7%E5%92%8C%E6%8A%A2%E5%8D%A0">&#x4F18;&#x5148;&#x7EA7;&#x548C;&#x62A2;&#x5360;</a></li>
</ul>
</li>
<li><a href="#%E5%9F%BA%E4%BA%8Escheduling-framework">&#x57FA;&#x4E8E;Scheduling Framework</a></li>
<li><a href="#%E4%BB%A3%E7%A0%81%E5%88%86%E6%9E%90">&#x4EE3;&#x7801;&#x5206;&#x6790;</a></li>
</ul>
<!-- tocstop -->
<h2 id="kubernetes&#x8D44;&#x6E90;&#x8C03;&#x5EA6;&#x2014;&#x2014;scheduler"><a name="kubernetes&#x8D44;&#x6E90;&#x8C03;&#x5EA6;&#x2014;&#x2014;scheduler" class="anchor-navigation-ex-anchor" href="#kubernetes&#x8D44;&#x6E90;&#x8C03;&#x5EA6;&#x2014;&#x2014;scheduler"><i class="fa fa-link" aria-hidden="true"></i></a>Kubernetes&#x8D44;&#x6E90;&#x8C03;&#x5EA6;&#x2014;&#x2014;scheduler</h2>
<h2 id="&#x7B80;&#x4ECB;"><a name="&#x7B80;&#x4ECB;" class="anchor-navigation-ex-anchor" href="#&#x7B80;&#x4ECB;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x7B80;&#x4ECB;</h2>
<p>&#x51E0;&#x4E2A;&#x4E3B;&#x8981;&#x70B9;</p>
<ol>
<li><p>Kubernetes &#x8C03;&#x5EA6;&#x672C;&#x8EAB;&#x7684;&#x6F14;&#x5316; <a href="https://mp.weixin.qq.com/s/AZhyux2PMYpNmWGhZnmI1g" target="_blank">&#x4ECE; Kubernetes &#x8D44;&#x6E90;&#x63A7;&#x5236;&#x5230;&#x5F00;&#x653E;&#x5E94;&#x7528;&#x6A21;&#x578B;&#xFF0C;&#x63A7;&#x5236;&#x5668;&#x7684;&#x8FDB;&#x5316;&#x4E4B;&#x65C5;</a></p>
</li>
<li><p>&#x8C03;&#x5EA6;&#x5668;&#x7684;&#x539F;&#x7406;&#xFF0C; <a href="https://ahmet.im/blog/initializers/" target="_blank">How Kubernetes Initializers work</a> the scheduler is yet another controller, watching for Pods to show up in the API server and assigns each of them to a Node <a href="https://jvns.ca/blog/2017/07/27/how-does-the-kubernetes-scheduler-work/" target="_blank">How does the Kubernetes scheduler work?</a>.</p>
<p>while True: pods = queue.getPod() assignNode(pod)</p>
</li>
</ol>
<p><strong>scheduler is not responsible for actually running the pod &#x2013; that&#x2019;s the kubelet&#x2019;s job. So it basically just needs to make sure every pod has a node assigned to it.</strong></p>
<h2 id="&#x5DE5;&#x4F5C;&#x6D41;&#x7A0B;"><a name="&#x5DE5;&#x4F5C;&#x6D41;&#x7A0B;" class="anchor-navigation-ex-anchor" href="#&#x5DE5;&#x4F5C;&#x6D41;&#x7A0B;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x5DE5;&#x4F5C;&#x6D41;&#x7A0B;</h2>
<p><a href="https://developer.ibm.com/technologies/containers/articles/creating-a-custom-kube-scheduler/#" target="_blank">Create a custom Kubernetes scheduler</a></p>
<ol>
<li>The default scheduler starts up according to the parameters given.</li>
<li>It watches on apiserver, and puts pods where its spec.nodeName is empty into its internal scheduling queue. It pops out a pod from the scheduling queue and starts a standard scheduling cycle.</li>
<li>It retrieves &#x201C;hard requirements&#x201D; (like cpu/memory requests, nodeSelector/nodeAffinity) from the pod&#x2019;s API spec. Then the predicates phase occurs where it calculates to give a node candidates list which satisfies those requirements.</li>
<li>It retrieves &#x201C;soft requirements&#x201D; from the pod&#x2019;s API spec and also applies some default soft &#x201C;policies&#x201D; (like the pods prefer to be more packed or scattered across the nodes). It finally gives a score for each candidate node, and picks up the final winner with the highest score.</li>
<li>It talks to the apiserver (by issuing a bind call) and sets</li>
</ol>
<h2 id="kubernetes-&#x8D44;&#x6E90;&#x6A21;&#x578B;&#x4E0E;&#x8D44;&#x6E90;&#x7BA1;&#x7406;"><a name="kubernetes-&#x8D44;&#x6E90;&#x6A21;&#x578B;&#x4E0E;&#x8D44;&#x6E90;&#x7BA1;&#x7406;" class="anchor-navigation-ex-anchor" href="#kubernetes-&#x8D44;&#x6E90;&#x6A21;&#x578B;&#x4E0E;&#x8D44;&#x6E90;&#x7BA1;&#x7406;"><i class="fa fa-link" aria-hidden="true"></i></a>Kubernetes &#x8D44;&#x6E90;&#x6A21;&#x578B;&#x4E0E;&#x8D44;&#x6E90;&#x7BA1;&#x7406;</h2>
<p>&#x5728; Kubernetes &#x91CC;&#xFF0C;Pod &#x662F;&#x6700;&#x5C0F;&#x7684;&#x539F;&#x5B50;&#x8C03;&#x5EA6;&#x5355;&#x4F4D;&#x3002;&#x8FD9;&#x4E5F;&#x5C31;&#x610F;&#x5473;&#x7740;&#xFF0C;&#x6240;&#x6709;&#x8DDF;&#x8C03;&#x5EA6;&#x548C;&#x8D44;&#x6E90;&#x7BA1;&#x7406;&#x76F8;&#x5173;&#x7684;&#x5C5E;&#x6027;&#x90FD;&#x5E94;&#x8BE5;&#x662F;&#x5C5E;&#x4E8E; Pod &#x5BF9;&#x8C61;&#x7684;&#x5B57;&#x6BB5;&#x3002;&#x800C;&#x8FD9;&#x5176;&#x4E2D;&#x6700;&#x91CD;&#x8981;&#x7684;&#x90E8;&#x5206;&#xFF0C;&#x5C31;&#x662F; Pod &#x7684;CPU &#x548C;&#x5185;&#x5B58;&#x914D;&#x7F6E;</p>
<p>&#x5728; Kubernetes &#x4E2D;&#xFF0C;&#x50CF; CPU &#x8FD9;&#x6837;&#x7684;&#x8D44;&#x6E90;&#x88AB;&#x79F0;&#x4F5C;&#x201C;&#x53EF;&#x538B;&#x7F29;&#x8D44;&#x6E90;&#x201D;&#xFF08;compressible resources&#xFF09;&#x3002;&#x5B83;&#x7684;&#x5178;&#x578B;&#x7279;&#x70B9;&#x662F;&#xFF0C;&#x5F53;&#x53EF;&#x538B;&#x7F29;&#x8D44;&#x6E90;&#x4E0D;&#x8DB3;&#x65F6;&#xFF0C;Pod &#x53EA;&#x4F1A;&#x201C;&#x9965;&#x997F;&#x201D;&#xFF0C;&#x4F46;&#x4E0D;&#x4F1A;&#x9000;&#x51FA;&#x3002;&#x800C;&#x50CF;&#x5185;&#x5B58;&#x8FD9;&#x6837;&#x7684;&#x8D44;&#x6E90;&#xFF0C;&#x5219;&#x88AB;&#x79F0;&#x4F5C;&#x201C;&#x4E0D;&#x53EF;&#x538B;&#x7F29;&#x8D44;&#x6E90;&#xFF08;incompressible resources&#xFF09;&#x3002;&#x5F53;&#x4E0D;&#x53EF;&#x538B;&#x7F29;&#x8D44;&#x6E90;&#x4E0D;&#x8DB3;&#x65F6;&#xFF0C;Pod &#x5C31;&#x4F1A;&#x56E0;&#x4E3A; OOM&#xFF08;Out-Of-Memory&#xFF09;&#x88AB;&#x5185;&#x6838;&#x6740;&#x6389;&#x3002;</p>
<h3 id="request-and-limit"><a name="request-and-limit" class="anchor-navigation-ex-anchor" href="#request-and-limit"><i class="fa fa-link" aria-hidden="true"></i></a>request and limit</h3>
<p>Kubernetes &#x91CC; Pod &#x7684; CPU &#x548C;&#x5185;&#x5B58;&#x8D44;&#x6E90;&#xFF0C;&#x5B9E;&#x9645;&#x4E0A;&#x8FD8;&#x8981;&#x5206;&#x4E3A; limits &#x548C; requests &#x4E24;&#x79CD;&#x60C5;&#x51B5;&#xFF1A;<strong>&#x5728;&#x8C03;&#x5EA6;&#x7684;&#x65F6;&#x5019;&#xFF0C;kube-scheduler &#x53EA;&#x4F1A;&#x6309;&#x7167; requests &#x7684;&#x503C;&#x8FDB;&#x884C;&#x8BA1;&#x7B97;</strong>&#x3002;&#x800C;&#x5728;&#x771F;&#x6B63;&#x8BBE;&#x7F6E; Cgroups &#x9650;&#x5236;&#x7684;&#x65F6;&#x5019;&#xFF0C;kubelet &#x5219;&#x4F1A;&#x6309;&#x7167; limits &#x7684;&#x503C;&#x6765;&#x8FDB;&#x884C;&#x8BBE;&#x7F6E;&#x3002;&#x8FD9;&#x4E2A;&#x7406;&#x5FF5;&#x57FA;&#x4E8E;&#x4E00;&#x79CD;&#x5047;&#x8BBE;&#xFF1A;&#x5BB9;&#x5668;&#x5316;&#x4F5C;&#x4E1A;&#x5728;&#x63D0;&#x4EA4;&#x65F6;&#x6240;&#x8BBE;&#x7F6E;&#x7684;&#x8D44;&#x6E90;&#x8FB9;&#x754C;&#xFF0C;&#x5E76;&#x4E0D;&#x4E00;&#x5B9A;&#x662F;&#x8C03;&#x5EA6;&#x7CFB;&#x7EDF;&#x6240;&#x5FC5;&#x987B;&#x4E25;&#x683C;&#x9075;&#x5B88;&#x7684;&#xFF0C;&#x8FD9;&#x662F;&#x56E0;&#x4E3A;&#x5728;&#x5B9E;&#x9645;&#x573A;&#x666F;&#x4E2D;&#xFF0C;&#x5927;&#x591A;&#x6570;&#x4F5C;&#x4E1A;&#x4F7F;&#x7528;&#x5230;&#x7684;&#x8D44;&#x6E90;&#x5176;&#x5B9E;&#x8FDC;&#x5C0F;&#x4E8E;&#x5B83;&#x6240;&#x8BF7;&#x6C42;&#x7684;&#x8D44;&#x6E90;&#x9650;&#x989D;&#x3002;</p>
<h3 id="request-limit-&#x5173;&#x7CFB;--qos--&#x9A71;&#x9010;&#x7B56;&#x7565;"><a name="request-limit-&#x5173;&#x7CFB;--qos--&#x9A71;&#x9010;&#x7B56;&#x7565;" class="anchor-navigation-ex-anchor" href="#request-limit-&#x5173;&#x7CFB;--qos--&#x9A71;&#x9010;&#x7B56;&#x7565;"><i class="fa fa-link" aria-hidden="true"></i></a>request limit &#x5173;&#x7CFB; ==&gt; QoS ==&gt; &#x9A71;&#x9010;&#x7B56;&#x7565;</h3>
<p>QoS &#x5212;&#x5206;&#x7684;&#x4E3B;&#x8981;&#x5E94;&#x7528;&#x573A;&#x666F;&#xFF0C;&#x662F;&#x5F53;&#x5BBF;&#x4E3B;&#x673A;&#x8D44;&#x6E90;&#xFF08;&#x4E3B;&#x8981;&#x662F;&#x4E0D;&#x53EF;&#x538B;&#x7F29;&#x8D44;&#x6E90;&#xFF09;&#x7D27;&#x5F20;&#x7684;&#x65F6;&#x5019;&#xFF0C;kubelet &#x5BF9; Pod &#x8FDB;&#x884C; Eviction&#xFF08;&#x5373;&#x8D44;&#x6E90;&#x56DE;&#x6536;&#xFF09;&#x65F6;&#x9700;&#x8981;&#x7528;&#x5230;&#x7684;&#x3002;&#x201C;&#x7D27;&#x5F20;&#x201D;&#x7A0B;&#x5EA6;&#x53EF;&#x4EE5;&#x4F5C;&#x4E3A;kubelet &#x542F;&#x52A8;&#x53C2;&#x6570;&#x914D;&#x7F6E;&#xFF0C;&#x9ED8;&#x8BA4;&#x4E3A;</p>
<pre class="language-"><code>memory.available&lt;100Mi
nodefs.available&lt;10%
nodefs.inodesFree&lt;5%
imagefs.available&lt;15%
</code></pre><p>Kubernetes &#x8BA1;&#x7B97; Eviction &#x9608;&#x503C;&#x7684;&#x6570;&#x636E;&#x6765;&#x6E90;&#xFF0C;&#x4E3B;&#x8981;&#x4F9D;&#x8D56;&#x4E8E;&#x4ECE; Cgroups &#x8BFB;&#x53D6;&#x5230;&#x7684;&#x503C;&#xFF0C;&#x4EE5;&#x53CA;&#x4F7F;&#x7528; cAdvisor &#x76D1;&#x63A7;&#x5230;&#x7684;&#x6570;&#x636E;&#x3002;&#x5F53;&#x5BBF;&#x4E3B;&#x673A;&#x7684; Eviction &#x9608;&#x503C;&#x8FBE;&#x5230;&#x540E;&#xFF0C;&#x5C31;&#x4F1A;&#x8FDB;&#x5165; MemoryPressure &#x6216;&#x8005; DiskPressure &#x72B6;&#x6001;&#xFF0C;&#x4ECE;&#x800C;&#x907F;&#x514D;&#x65B0;&#x7684; Pod &#x88AB;&#x8C03;&#x5EA6;&#x5230;&#x8FD9;&#x53F0;&#x5BBF;&#x4E3B;&#x673A;&#x4E0A;&#x3002;</p>
<p>limit &#x4E0D;&#x8BBE;&#x5B9A;&#xFF0C;&#x9ED8;&#x8BA4;&#x503C;&#x7531; LimitRange object&#x786E;&#x5B9A;</p>
<table>
<thead>
<tr>
<th style="text-align:left">limits</th>
<th style="text-align:left">requests</th>
<th style="text-align:left"></th>
<th style="text-align:left">Qos&#x6A21;&#x578B;</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align:left">&#x6709;</td>
<td style="text-align:left">&#x6709;</td>
<td style="text-align:left">&#x4E24;&#x8005;&#x76F8;&#x7B49;</td>
<td style="text-align:left">Guaranteed</td>
</tr>
<tr>
<td style="text-align:left">&#x6709;</td>
<td style="text-align:left">&#x65E0;</td>
<td style="text-align:left">&#x9ED8;&#x8BA4;&#x4E24;&#x8005;&#x76F8;&#x7B49;</td>
<td style="text-align:left">Guaranteed</td>
</tr>
<tr>
<td style="text-align:left">x</td>
<td style="text-align:left">&#x6709;</td>
<td style="text-align:left">&#x4E24;&#x8005;&#x4E0D;&#x76F8;&#x7B49;</td>
<td style="text-align:left">Burstable</td>
</tr>
<tr>
<td style="text-align:left">&#x65E0;</td>
<td style="text-align:left">&#x65E0;</td>
<td style="text-align:left"></td>
<td style="text-align:left">BestEffort</td>
</tr>
</tbody>
</table>
<p>&#x800C;&#x5F53; Eviction &#x53D1;&#x751F;&#x7684;&#x65F6;&#x5019;&#xFF0C;kubelet &#x5177;&#x4F53;&#x4F1A;&#x6311;&#x9009;&#x54EA;&#x4E9B; Pod &#x8FDB;&#x884C;&#x5220;&#x9664;&#x64CD;&#x4F5C;&#xFF0C;&#x5C31;&#x9700;&#x8981;&#x53C2;&#x8003;&#x8FD9;&#x4E9B; Pod &#x7684; QoS &#x7C7B;&#x522B;&#x4E86;&#x3002;PS&#xFF1A;&#x600E;&#x4E48;&#x6709;&#x4E00;&#x79CD; &#x7F13;&#x5B58; evit &#x7684;&#x611F;&#x89C9;&#x3002;limit &#x8D8A;&#x201C;&#x6A21;&#x7CCA;&#x201D;&#xFF0C;&#x7269;&#x7406;&#x673A;MemoryPressure/DiskPressure &#x65F6;&#xFF0C;&#x8D8A;&#x5BB9;&#x6613;&#x4F18;&#x5148;&#x88AB;&#x5E72;&#x6389;&#x3002;</p>
<p>DaemonSet &#x7684; Pod &#x90FD;&#x8BBE;&#x7F6E;&#x4E3A; Guaranteed &#x7684; QoS &#x7C7B;&#x578B;&#x3002;&#x5426;&#x5219;&#xFF0C;&#x4E00;&#x65E6; DaemonSet &#x7684; Pod &#x88AB;&#x56DE;&#x6536;&#xFF0C;&#x5B83;&#x53C8;&#x4F1A;&#x7ACB;&#x5373;&#x5728;&#x539F;&#x5BBF;&#x4E3B;&#x673A;&#x4E0A;&#x88AB;&#x91CD;&#x5EFA;&#x51FA;&#x6765;&#xFF0C;&#x8FD9;&#x5C31;&#x4F7F;&#x5F97;&#x524D;&#x9762;&#x8D44;&#x6E90;&#x56DE;&#x6536;&#x7684;&#x52A8;&#x4F5C;&#xFF0C;&#x5B8C;&#x5168;&#x6CA1;&#x6709;&#x610F;&#x4E49;&#x4E86;&#x3002;</p>
<h2 id="kubernetes-&#x57FA;&#x4E8E;&#x8D44;&#x6E90;&#x7684;&#x8C03;&#x5EA6;"><a name="kubernetes-&#x57FA;&#x4E8E;&#x8D44;&#x6E90;&#x7684;&#x8C03;&#x5EA6;" class="anchor-navigation-ex-anchor" href="#kubernetes-&#x57FA;&#x4E8E;&#x8D44;&#x6E90;&#x7684;&#x8C03;&#x5EA6;"><i class="fa fa-link" aria-hidden="true"></i></a>Kubernetes &#x57FA;&#x4E8E;&#x8D44;&#x6E90;&#x7684;&#x8C03;&#x5EA6;</h2>
<p>&#x5728; Kubernetes &#x9879;&#x76EE;&#x4E2D;&#xFF0C;&#x9ED8;&#x8BA4;&#x8C03;&#x5EA6;&#x5668;&#x7684;&#x4E3B;&#x8981;&#x804C;&#x8D23;&#xFF0C;&#x5C31;&#x662F;&#x4E3A;&#x4E00;&#x4E2A;&#x65B0;&#x521B;&#x5EFA;&#x51FA;&#x6765;&#x7684; Pod&#xFF0C;&#x5BFB;&#x627E;&#x4E00;&#x4E2A;&#x6700;&#x5408;&#x9002;&#x7684;&#x8282;&#x70B9;&#xFF08;Node&#xFF09;&#x800C;&#x8FD9;&#x91CC;&#x201C;&#x6700;&#x5408;&#x9002;&#x201D;&#x7684;&#x542B;&#x4E49;&#xFF0C;&#x5305;&#x62EC;&#x4E24;&#x5C42;&#xFF1A;</p>
<ol>
<li>&#x4ECE;&#x96C6;&#x7FA4;&#x6240;&#x6709;&#x7684;&#x8282;&#x70B9;&#x4E2D;&#xFF0C;&#x6839;&#x636E;&#x8C03;&#x5EA6;&#x7B97;&#x6CD5;&#x6311;&#x9009;&#x51FA;&#x6240;&#x6709;&#x53EF;&#x4EE5;&#x8FD0;&#x884C;&#x8BE5; Pod &#x7684;&#x8282;&#x70B9;&#xFF1B;</li>
<li>&#x4ECE;&#x7B2C;&#x4E00;&#x6B65;&#x7684;&#x7ED3;&#x679C;&#x4E2D;&#xFF0C;&#x518D;&#x6839;&#x636E;&#x8C03;&#x5EA6;&#x7B97;&#x6CD5;&#x6311;&#x9009;&#x4E00;&#x4E2A;&#x6700;&#x7B26;&#x5408;&#x6761;&#x4EF6;&#x7684;&#x8282;&#x70B9;&#x4F5C;&#x4E3A;&#x6700;&#x7EC8;&#x7ED3;&#x679C;&#x3002;</li>
</ol>
<p>&#x6240;&#x4EE5;&#x5728;&#x5177;&#x4F53;&#x7684;&#x8C03;&#x5EA6;&#x6D41;&#x7A0B;&#x4E2D;&#xFF0C;&#x9ED8;&#x8BA4;&#x8C03;&#x5EA6;&#x5668;&#x4F1A;&#x9996;&#x5148;&#x8C03;&#x7528;&#x4E00;&#x7EC4;&#x53EB;&#x4F5C; Predicate &#x7684;&#x8C03;&#x5EA6;&#x7B97;&#x6CD5;&#xFF0C;&#x6765;&#x68C0;&#x67E5;&#x6BCF;&#x4E2A; Node&#x3002;&#x7136;&#x540E;&#xFF0C;&#x518D;&#x8C03;&#x7528;&#x4E00;&#x7EC4;&#x53EB;&#x4F5C; Priority &#x7684;&#x8C03;&#x5EA6;&#x7B97;&#x6CD5;&#xFF0C;&#x6765;&#x7ED9;&#x4E0A;&#x4E00;&#x6B65;&#x5F97;&#x5230;&#x7684;&#x7ED3;&#x679C;&#x91CC;&#x7684;&#x6BCF;&#x4E2A; Node &#x6253;&#x5206;&#x3002;&#x6700;&#x7EC8;&#x7684;&#x8C03;&#x5EA6;&#x7ED3;&#x679C;&#xFF0C;&#x5C31;&#x662F;&#x5F97;&#x5206;&#x6700;&#x9AD8;&#x7684;&#x90A3;&#x4E2A;Node&#x3002;</p>
<p>&#x9664;&#x4E86;Pod&#xFF0C;Scheduler &#x9700;&#x8981;&#x8C03;&#x5EA6;&#x5176;&#x5B83;&#x5BF9;&#x8C61;&#x4E48;&#xFF1F;&#x4E0D;&#x9700;&#x8981;&#x3002;&#x56E0;&#x4E3A;Kubernetes &#x5BF9;&#x8C61;&#x867D;&#x591A;&#xFF0C;<strong>&#x4F46;&#x53EA;&#x6709;Pod &#x662F;&#x8C03;&#x5EA6;&#x5BF9;&#x8C61;</strong>&#xFF0C;&#x5176;&#x5B83;&#x5BF9;&#x8C61;&#x5305;&#x62EC;&#x6570;&#x636E;&#x5BF9;&#x8C61;&#xFF08;&#x6BD4;&#x5982;PVC&#x7B49;&#xFF09;&#x3001;&#x7F16;&#x6392;&#x5BF9;&#x8C61;&#xFF08;Deployment&#xFF09;&#x3001;Pod&#x8F85;&#x52A9;&#x5BF9;&#x8C61;&#xFF08;NetworkPolicy&#x7B49;&#xFF09; &#x90FD;&#x53EA;&#x662F;&#x5F71;&#x54CD;Pod&#x7684;&#x8C03;&#x5EA6;&#xFF0C;&#x672C;&#x8EAB;&#x4E0D;&#x76F4;&#x63A5;&#x6D88;&#x8017;&#x8BA1;&#x7B97;&#x548C;&#x5185;&#x5B58;&#x8D44;&#x6E90;&#x3002;</p>
<p><strong>Scheduler&#x5BF9;&#x4E00;&#x4E2A; Pod &#x8C03;&#x5EA6;&#x6210;&#x529F;&#xFF0C;&#x662F;&#x901A;&#x8FC7;&#x8BBE;&#x7F6E;Pod&#x7684;.Spec.NodeName&#x4E3A;&#x8282;&#x70B9;&#x7684;&#x540D;&#x79F0;</strong>&#xFF0C;&#x5C06;&#x4E00;&#x4E2A;Pod&#x7ED1;&#x5B9A;&#x5230;&#x4E00;&#x4E2A;&#x8282;&#x70B9;&#x3002;&#x7136;&#x800C;&#xFF0C;Scheduler&#x662F;&#x95F4;&#x63A5;&#x5730;&#x8BBE;&#x7F6E;.Spec.NodeName&#x800C;&#x4E0D;&#x662F;&#x76F4;&#x63A5;&#x8BBE;&#x7F6E;&#x3002;Kubernetes Scheduler&#x4E0D;&#x88AB;&#x5141;&#x8BB8;&#x66F4;&#x65B0;Pod&#x7684;Spec&#x3002;&#x56E0;&#x6B64;&#xFF0C;KubernetesScheduler&#x521B;&#x5EFA;&#x4E86;&#x4E00;&#x4E2A;Kubernetes&#x7ED1;&#x5B9A;&#x5BF9;&#x8C61;, &#x800C;&#x4E0D;&#x662F;&#x66F4;&#x65B0;Pod&#x3002;&#x5728;&#x521B;&#x5EFA;&#x7ED1;&#x5B9A;&#x5BF9;&#x8C61;&#x540E;&#xFF0C;Kubernetes API&#x5C06;&#x8D1F;&#x8D23;&#x66F4;&#x65B0;Pod&#x7684;.Spec.NodeName&#x3002;</p>
<p>&#x8C03;&#x5EA6;&#x4E3B;&#x8981;&#x5305;&#x62EC;&#x4E24;&#x4E2A;&#x90E8;&#x5206;</p>
<ol>
<li>&#x7EC4;&#x4EF6;&#x4EA4;&#x4E92;&#xFF0C;&#x5305;&#x62EC;&#x5982;&#x4F55;&#x4E0E;api server&#x4EA4;&#x4E92;&#x611F;&#x77E5;pod &#x53D8;&#x5316;&#xFF0C;&#x5982;&#x4F55;&#x611F;&#x77E5;node &#x8282;&#x70B9;&#x7684;cpu&#x3001;&#x5185;&#x5B58;&#x7B49;&#x53C2;&#x6570;&#x3002;PS&#xFF1A;&#x4EFB;&#x4F55;&#x8C03;&#x5EA6;&#x7CFB;&#x7EDF;&#x90FD;&#x6709;&#x8FD9;&#x4E2A;&#x95EE;&#x9898;&#x3002;</li>
<li>&#x8C03;&#x5EA6;&#x7B97;&#x6CD5;&#xFF0C;&#x4E0A;&#x6587;&#x7684;Predicate&#x548C;Priority &#x7B97;&#x6CD5;</li>
</ol>
<p>&#x8C03;&#x5EA6;&#x8FD9;&#x4E2A;&#x4E8B;&#x60C5;&#xFF0C;&#x5728;&#x4E0D;&#x540C;&#x7684;&#x516C;&#x53F8;&#x548C;&#x56E2;&#x961F;&#x91CC;&#x7684;&#x5B9E;&#x9645;&#x9700;&#x6C42;&#x4E00;&#x5B9A;&#x662F;&#x5927;&#x76F8;&#x5F84;&#x5EAD;&#x7684;&#x3002;&#x4E0A;&#x6E38;&#x793E;&#x533A;&#x4E0D;&#x53EF;&#x80FD;&#x63D0;&#x4F9B;&#x4E00;&#x4E2A;&#x5927;&#x800C;&#x5168;&#x7684;&#x65B9;&#x6848;&#x51FA;&#x6765;&#x3002;&#x6240;&#x4EE5;&#xFF0C;&#x5C06;&#x9ED8;&#x8BA4;&#x8C03;&#x5EA6;&#x5668;&#x63D2;&#x4EF6;&#x5316;&#x662F; kube-scheduler &#x7684;&#x6F14;&#x8FDB;&#x65B9;&#x5411;&#x3002;</p>
<h3 id="&#x8C13;&#x8BCD;&#x548C;&#x4F18;&#x5148;&#x7EA7;&#x7B97;&#x6CD5;"><a name="&#x8C13;&#x8BCD;&#x548C;&#x4F18;&#x5148;&#x7EA7;&#x7B97;&#x6CD5;" class="anchor-navigation-ex-anchor" href="#&#x8C13;&#x8BCD;&#x548C;&#x4F18;&#x5148;&#x7EA7;&#x7B97;&#x6CD5;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x8C13;&#x8BCD;&#x548C;&#x4F18;&#x5148;&#x7EA7;&#x7B97;&#x6CD5;</h3>
<p><a href="https://mp.weixin.qq.com/s/R3BZpYJrBPBI0DwbJYB0YA" target="_blank">&#x8C03;&#x5EA6;&#x7CFB;&#x7EDF;&#x8BBE;&#x8BA1;&#x7CBE;&#x8981;</a></p>
<p><img src="https://cai-hello-1253732611.cos.ap-shanghai.myqcloud.com/share/205352.png" alt="img"></p>
<p>&#x6211;&#x4EEC;&#x5047;&#x8BBE;&#x8C03;&#x5EA6;&#x5668;&#x4E2D;&#x5B58;&#x5728;&#x4E00;&#x4E2A;&#x8C13;&#x8BCD;&#x7B97;&#x6CD5;&#x548C;&#x4E00;&#x4E2A; Map-Reduce &#x4F18;&#x5148;&#x7EA7;&#x7B97;&#x6CD5;&#xFF0C;&#x5F53;&#x6211;&#x4EEC;&#x4E3A;&#x4E00;&#x4E2A; Pod &#x5728; 6 &#x4E2A;&#x8282;&#x70B9;&#x4E2D;&#x9009;&#x62E9;&#x6700;&#x5408;&#x9002;&#x7684;&#x4E00;&#x4E2A;&#x65F6;&#xFF0C;6 &#x4E2A;&#x8282;&#x70B9;&#x4F1A;&#x5148;&#x7ECF;&#x8FC7;&#x8C13;&#x8BCD;&#x7684;&#x7B5B;&#x9009;&#xFF0C;&#x56FE;&#x4E2D;&#x7684;&#x8C13;&#x8BCD;&#x7B97;&#x6CD5;&#x4F1A;&#x8FC7;&#x6EE4;&#x6389;&#x4E00;&#x534A;&#x7684;&#x8282;&#x70B9;&#xFF0C;&#x5269;&#x4F59;&#x7684; 3 &#x4E2A;&#x8282;&#x70B9;&#x7ECF;&#x8FC7; Map &#x548C; Reduce &#x4E24;&#x4E2A;&#x8FC7;&#x7A0B;&#x5206;&#x522B;&#x5F97;&#x5230;&#x4E86; 5&#x3001;10 &#x548C; 5 &#x5206;&#xFF0C;&#x6700;&#x7EC8;&#x8C03;&#x5EA6;&#x5668;&#x5C31;&#x4F1A;&#x9009;&#x62E9;&#x5206;&#x6570;&#x6700;&#x9AD8;&#x7684; 4 &#x53F7;&#x8282;&#x70B9;&#x3002;</p>
<h3 id="predicate"><a name="predicate" class="anchor-navigation-ex-anchor" href="#predicate"><i class="fa fa-link" aria-hidden="true"></i></a>Predicate</h3>
<ol>
<li>GeneralPredicates<ol>
<li>PodFitsResources&#xFF0C;&#x68C0;&#x67E5;&#x7684;&#x53EA;&#x662F; Pod &#x7684; requests &#x5B57;&#x6BB5;</li>
<li>PodFitsHost&#xFF0C;&#x5BBF;&#x4E3B;&#x673A;&#x7684;&#x540D;&#x5B57;&#x662F;&#x5426;&#x8DDF; Pod &#x7684; spec.nodeName &#x4E00;&#x81F4;&#x3002;</li>
<li>PodFitsHostPorts&#xFF0C;Pod &#x7533;&#x8BF7;&#x7684;&#x5BBF;&#x4E3B;&#x673A;&#x7AEF;&#x53E3;&#xFF08;spec.nodePort&#xFF09;&#x662F;&#x4E0D;&#x662F;&#x8DDF;&#x5DF2;&#x7ECF;&#x88AB;&#x4F7F;&#x7528;&#x7684;&#x7AEF;&#x53E3;&#x6709;&#x51B2;&#x7A81;&#x3002;</li>
<li>PodMatchNodeSelector&#xFF0C;Pod &#x7684; nodeSelector &#x6216;&#x8005; nodeAffinity &#x6307;&#x5B9A;&#x7684;&#x8282;&#x70B9;&#xFF0C;&#x662F;&#x5426;&#x4E0E;&#x5F85;&#x8003;&#x5BDF;&#x8282;&#x70B9;&#x5339;&#x914D;</li>
</ol>
</li>
<li>&#x4E0E; Volume &#x76F8;&#x5173;&#x7684;&#x8FC7;&#x6EE4;&#x89C4;&#x5219;</li>
<li>&#x662F;&#x5BBF;&#x4E3B;&#x673A;&#x76F8;&#x5173;&#x7684;&#x8FC7;&#x6EE4;&#x89C4;&#x5219;</li>
<li>Pod &#x76F8;&#x5173;&#x7684;&#x8FC7;&#x6EE4;&#x89C4;&#x5219;&#x3002;&#x6BD4;&#x8F83;&#x7279;&#x6B8A;&#x7684;&#xFF0C;&#x662F; PodAffinityPredicate&#x3002;&#x8FD9;&#x4E2A;&#x89C4;&#x5219;&#x7684;&#x4F5C;&#x7528;&#xFF0C;&#x662F;&#x68C0;&#x67E5;&#x5F85;&#x8C03;&#x5EA6; Pod &#x4E0E; Node &#x4E0A;&#x7684;&#x5DF2;&#x6709; Pod &#x4E4B;&#x95F4;&#x7684;&#x4EB2;&#x5BC6;&#xFF08;affinity&#xFF09;&#x548C;&#x53CD;&#x4EB2;&#x5BC6;&#xFF08;anti-affinity&#xFF09;&#x5173;&#x7CFB;</li>
</ol>
<p>&#x5728;&#x5177;&#x4F53;&#x6267;&#x884C;&#x7684;&#x65F6;&#x5019;&#xFF0C; &#x5F53;&#x5F00;&#x59CB;&#x8C03;&#x5EA6;&#x4E00;&#x4E2A; Pod &#x65F6;&#xFF0C;Kubernetes &#x8C03;&#x5EA6;&#x5668;&#x4F1A;&#x540C;&#x65F6;&#x542F;&#x52A8; 16 &#x4E2A; Goroutine&#xFF0C;&#x6765;&#x5E76;&#x53D1;&#x5730;&#x4E3A;&#x96C6;&#x7FA4;&#x91CC;&#x7684;&#x6240;&#x6709; Node &#x8BA1;&#x7B97; Predicates&#xFF0C;&#x6700;&#x540E;&#x8FD4;&#x56DE;&#x53EF;&#x4EE5;&#x8FD0;&#x884C;&#x8FD9;&#x4E2A; Pod &#x7684;&#x5BBF;&#x4E3B;&#x673A;&#x5217;&#x8868;&#x3002;</p>
<h3 id="priorities"><a name="priorities" class="anchor-navigation-ex-anchor" href="#priorities"><i class="fa fa-link" aria-hidden="true"></i></a>Priorities</h3>
<p>&#x5728; Predicates &#x9636;&#x6BB5;&#x5B8C;&#x6210;&#x4E86;&#x8282;&#x70B9;&#x7684;&#x201C;&#x8FC7;&#x6EE4;&#x201D;&#x4E4B;&#x540E;&#xFF0C;Priorities &#x9636;&#x6BB5;&#x7684;&#x5DE5;&#x4F5C;&#x5C31;&#x662F;&#x4E3A;&#x8FD9;&#x4E9B;&#x8282;&#x70B9;&#x6253;&#x5206;&#x3002;&#x8FD9;&#x91CC;&#x6253;&#x5206;&#x7684;&#x8303;&#x56F4;&#x662F; 0-10 &#x5206;&#xFF0C;&#x5F97;&#x5206;&#x6700;&#x9AD8;&#x7684;&#x8282;&#x70B9;&#x5C31;&#x662F;&#x6700;&#x540E;&#x88AB; Pod &#x7ED1;&#x5B9A;&#x7684;&#x6700;&#x4F73;&#x8282;&#x70B9;&#x3002;</p>
<ol>
<li>LeastRequestedPriority + BalancedResourceAllocation<ol>
<li>LeastRequestedPriority&#x8BA1;&#x7B97;&#x65B9;&#x6CD5;<code>score = (cpu((capacity-sum(requested))10/capacity) + memory((capacity-sum(requested))10/capacity))/2</code> &#x5B9E;&#x9645;&#x4E0A;&#x5C31;&#x662F;&#x5728;&#x9009;&#x62E9;&#x7A7A;&#x95F2;&#x8D44;&#x6E90;&#xFF08;CPU &#x548C; Memory&#xFF09;&#x6700;&#x591A;&#x7684;&#x7269;&#x7406;&#x673A;</li>
<li>BalancedResourceAllocation&#xFF0C;&#x8BA1;&#x7B97;&#x65B9;&#x6CD5;<code>score = 10 - variance(cpuFraction,memoryFraction,volumeFraction)*10</code> &#x6BCF;&#x79CD;&#x8D44;&#x6E90;&#x7684; Fraction &#x7684;&#x5B9A;&#x4E49;&#x662F; &#xFF1A;Pod &#x8BF7;&#x6C42;&#x7684;&#x8D44;&#x6E90;/ &#x8282;&#x70B9;&#x4E0A;&#x7684;&#x53EF;&#x7528;&#x8D44;&#x6E90;&#x3002;&#x800C; variance &#x7B97;&#x6CD5;&#x7684;&#x4F5C;&#x7528;&#xFF0C;&#x5219;&#x662F;&#x8D44;&#x6E90; Fraction &#x5DEE;&#x8DDD;&#x6700;&#x5C0F;&#x7684;&#x8282;&#x70B9;&#x3002;BalancedResourceAllocation &#x9009;&#x62E9;&#x7684;&#xFF0C;&#x5176;&#x5B9E;&#x662F;&#x8C03;&#x5EA6;&#x5B8C;&#x6210;&#x540E;&#xFF0C;&#x6240;&#x6709;&#x8282;&#x70B9;&#x91CC;&#x5404;&#x79CD;&#x8D44;&#x6E90;&#x5206;&#x914D;&#x6700;&#x5747;&#x8861;&#x7684;&#x90A3;&#x4E2A;&#x8282;&#x70B9;&#xFF0C;&#x4ECE;&#x800C;&#x907F;&#x514D;&#x4E00;&#x4E2A;&#x8282;&#x70B9;&#x4E0A; CPU &#x88AB;&#x5927;&#x91CF;&#x5206;&#x914D;&#x3001;&#x800C; Memory &#x5927;&#x91CF;&#x5269;&#x4F59;&#x7684;&#x60C5;&#x51B5;&#x3002;</li>
</ol>
</li>
<li>NodeAffinityPriority</li>
<li>TaintTolerationPriority</li>
<li>InterPodAffinityPriority</li>
<li>ImageLocalityPriority</li>
</ol>
<h3 id="&#x4F18;&#x5148;&#x7EA7;&#x548C;&#x62A2;&#x5360;"><a name="&#x4F18;&#x5148;&#x7EA7;&#x548C;&#x62A2;&#x5360;" class="anchor-navigation-ex-anchor" href="#&#x4F18;&#x5148;&#x7EA7;&#x548C;&#x62A2;&#x5360;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x4F18;&#x5148;&#x7EA7;&#x548C;&#x62A2;&#x5360;</h3>
<p>&#x4F18;&#x5148;&#x7EA7;&#x548C;&#x62A2;&#x5360;&#x673A;&#x5236;&#xFF0C;&#x89E3;&#x51B3;&#x7684;&#x662F; &#xFF08;&#x9AD8;&#x4F18;&#x5148;&#x7EA7;&#x7684;&#xFF09;Pod &#x8C03;&#x5EA6;&#x5931;&#x8D25;&#x65F6;&#x8BE5;&#x600E;&#x4E48;&#x529E;&#x7684;&#x95EE;&#x9898;</p>
<pre class="language-"><code>apiVersion: v1
kind: Pod
metadata:
name: nginx
labels:
    env: test
spec:
containers:
- name: nginx
    image: nginx
    imagePullPolicy: IfNotPresent
priorityClassName: high-priority
</code></pre><p>Pod &#x901A;&#x8FC7; priorityClassName &#x5B57;&#x6BB5;&#xFF0C;&#x58F0;&#x660E;&#x4E86;&#x8981;&#x4F7F;&#x7528;&#x540D;&#x53EB; high-priority &#x7684; PriorityClass&#x3002;&#x5F53;&#x8FD9;&#x4E2A; Pod &#x88AB;&#x63D0;&#x4EA4;&#x7ED9; Kubernetes &#x4E4B;&#x540E;&#xFF0C;Kubernetes &#x7684; PriorityAdmissionController &#x5C31;&#x4F1A;&#x81EA;&#x52A8;&#x5C06;&#x8FD9;&#x4E2A; Pod &#x7684; spec.priority &#x5B57;&#x6BB5;&#x8BBE;&#x7F6E;&#x4E3A; PriorityClass &#x5BF9;&#x5E94;&#x7684;value &#x503C;&#x3002;</p>
<p>&#x5982;&#x679C;&#x786E;&#x5B9A;&#x62A2;&#x5360;&#x53EF;&#x4EE5;&#x53D1;&#x751F;&#xFF0C;&#x90A3;&#x4E48;&#x8C03;&#x5EA6;&#x5668;&#x5C31;&#x4F1A;&#x628A;&#x81EA;&#x5DF1;&#x7F13;&#x5B58;&#x7684;&#x6240;&#x6709;&#x8282;&#x70B9;&#x4FE1;&#x606F;&#x590D;&#x5236;&#x4E00;&#x4EFD;&#xFF0C;&#x7136;&#x540E;&#x4F7F;&#x7528;&#x8FD9;&#x4E2A;&#x526F;&#x672C;&#x6765;&#x6A21;&#x62DF;&#x62A2;&#x5360;&#x8FC7;&#x7A0B;&#x3002;</p>
<ol>
<li>&#x627E;&#x5230;&#x727A;&#x7272;&#x8005;&#xFF0C;&#x5224;&#x65AD;&#x62A2;&#x5360;&#x8005;&#x662F;&#x5426;&#x53EF;&#x4EE5;&#x90E8;&#x7F72;&#x5728;&#x727A;&#x7272;&#x8005;&#x6240;&#x5728;&#x7684;Node&#x4E0A;</li>
<li>&#x771F;&#x6B63;&#x5F00;&#x59CB;&#x62A2;&#x5360;<ol>
<li>&#x8C03;&#x5EA6;&#x5668;&#x4F1A;&#x68C0;&#x67E5;&#x727A;&#x7272;&#x8005;&#x5217;&#x8868;&#xFF0C;&#x6E05;&#x7406;&#x8FD9;&#x4E9B; Pod &#x6240;&#x643A;&#x5E26;&#x7684; nominatedNodeName &#x5B57;&#x6BB5;&#x3002;</li>
<li>&#x8C03;&#x5EA6;&#x5668;&#x4F1A;&#x628A;&#x62A2;&#x5360;&#x8005;&#x7684; nominatedNodeName&#xFF0C;&#x8BBE;&#x7F6E;&#x4E3A;&#x88AB;&#x62A2;&#x5360;&#x7684; Node &#x7684;&#x540D;&#x5B57;&#x3002;</li>
<li>&#x8C03;&#x5EA6;&#x5668;&#x4F1A;&#x5F00;&#x542F;&#x4E00;&#x4E2A; Goroutine&#xFF0C;&#x540C;&#x6B65;&#x5730;&#x5220;&#x9664;&#x727A;&#x7272;&#x8005;&#x3002;</li>
</ol>
</li>
<li>&#x8C03;&#x5EA6;&#x5668;&#x5C31;&#x4F1A;&#x901A;&#x8FC7;&#x6B63;&#x5E38;&#x7684;&#x8C03;&#x5EA6;&#x6D41;&#x7A0B;&#x628A;&#x62A2;&#x5360;&#x8005;&#x8C03;&#x5EA6;&#x6210;&#x529F;</li>
</ol>
<h2 id="&#x57FA;&#x4E8E;scheduling-framework"><a name="&#x57FA;&#x4E8E;scheduling-framework" class="anchor-navigation-ex-anchor" href="#&#x57FA;&#x4E8E;scheduling-framework"><i class="fa fa-link" aria-hidden="true"></i></a>&#x57FA;&#x4E8E;Scheduling Framework</h2>
<p>&#x660E;&#x786E;&#x4E86; Kubernetes &#x4E2D;&#x7684;&#x5404;&#x4E2A;&#x8C03;&#x5EA6;&#x9636;&#x6BB5;&#xFF0C;&#x63D0;&#x4F9B;&#x4E86;&#x8BBE;&#x8BA1;&#x826F;&#x597D;&#x7684;&#x57FA;&#x4E8E;&#x63D2;&#x4EF6;&#x7684;&#x63A5;&#x53E3;&#x3002;&#x8C03;&#x5EA6;&#x6846;&#x67B6;&#x8BA4;&#x4E3A; Kubernetes &#x4E2D;&#x76EE;&#x524D;&#x5B58;&#x5728;&#x8C03;&#x5EA6;&#xFF08;Scheduling&#xFF09;&#x548C;&#x7ED1;&#x5B9A;&#xFF08;Binding&#xFF09;&#x4E24;&#x4E2A;&#x5FAA;&#x73AF;&#xFF1A;</p>
<ol>
<li>&#x8C03;&#x5EA6;&#x5FAA;&#x73AF;&#x5728;&#x591A;&#x4E2A; Node &#x4E2D;&#x4E3A; Pod &#x9009;&#x62E9;&#x6700;&#x5408;&#x9002;&#x7684; Node&#xFF1B;</li>
<li>&#x7ED1;&#x5B9A;&#x5FAA;&#x73AF;&#x5C06;&#x8C03;&#x5EA6;&#x51B3;&#x7B56;&#x5E94;&#x7528;&#x5230;&#x96C6;&#x7FA4;&#x4E2D;&#xFF0C;&#x5305;&#x62EC;&#x7ED1;&#x5B9A; Pod &#x548C; Node&#x3001;&#x7ED1;&#x5B9A;&#x6301;&#x4E45;&#x5B58;&#x50A8;&#x7B49;&#x5DE5;&#x4F5C;&#xFF1B;</li>
</ol>
<p>&#x9664;&#x4E86;&#x4E24;&#x4E2A;&#x5927;&#x5FAA;&#x73AF;&#x4E4B;&#x5916;&#xFF0C;&#x8C03;&#x5EA6;&#x6846;&#x67B6;&#x4E2D;&#x8FD8;&#x5305;&#x542B; QueueSort&#x3001;PreFilter&#x3001;Filter&#x3001;PostFilter&#x3001;Score&#x3001;Reserve&#x3001;Permit&#x3001;PreBind&#x3001;Bind&#x3001;PostBind &#x548C; Unreserve 11 &#x4E2A;&#x6269;&#x5C55;&#x70B9;&#xFF08;Extension Point&#xFF09;&#xFF0C;&#x8FD9;&#x4E9B;&#x6269;&#x5C55;&#x70B9;&#x4F1A;&#x5728;&#x8C03;&#x5EA6;&#x7684;&#x8FC7;&#x7A0B;&#x4E2D;&#x89E6;&#x53D1;&#xFF0C;&#x5B83;&#x4EEC;&#x7684;&#x8FD0;&#x884C;&#x987A;&#x5E8F;&#x5982;&#x4E0B;&#xFF1A;</p>
<p><img src="https://cai-hello-1253732611.cos.ap-shanghai.myqcloud.com/share/205356.png" alt="img"></p>
<p><a href="https://github.com/kubernetes/enhancements/blob/master/keps/sig-scheduling/20180409-scheduling-framework.md" target="_blank">Scheduling Framework</a>scheduling cycle</p>
<ol>
<li>QueueSort, These plugins are used to sort pods in the scheduling queue. A queue sort plugin essentially will provide a &#x201C;less(pod1, pod2)&#x201D; function. Only one queue sort plugin may be enabled at a time.</li>
<li>PreFilter, PreFilter &#x7C7B;&#x4F3C;&#x4E8E;&#x8C03;&#x5EA6;&#x6D41;&#x7A0B;&#x542F;&#x52A8;&#x4E4B;&#x524D;&#x7684;&#x9884;&#x5904;&#x7406;&#xFF0C;&#x53EF;&#x4EE5;&#x5BF9; Pod &#x7684;&#x4FE1;&#x606F;&#x8FDB;&#x884C;&#x52A0;&#x5DE5;&#x3002;&#x540C;&#x65F6; PreFilter &#x4E5F;&#x53EF;&#x4EE5;&#x8FDB;&#x884C;&#x4E00;&#x4E9B;&#x9884;&#x7F6E;&#x6761;&#x4EF6;&#x7684;&#x68C0;&#x67E5;&#xFF0C;&#x53BB;&#x68C0;&#x67E5;&#x4E00;&#x4E9B;&#x96C6;&#x7FA4;&#x7EF4;&#x5EA6;&#x7684;&#x6761;&#x4EF6;&#xFF0C;&#x5224;&#x65AD;&#x5426;&#x6EE1;&#x8DB3; pod &#x7684;&#x8981;&#x6C42;&#x3002;</li>
<li>Filter, <strong>&#x662F; scheduler v1 &#x7248;&#x672C;&#x4E2D;&#x7684; Predicate &#x7684;&#x903B;&#x8F91;</strong>&#xFF0C;&#x7528;&#x6765;&#x8FC7;&#x6EE4;&#x6389;&#x4E0D;&#x6EE1;&#x8DB3; Pod &#x8C03;&#x5EA6;&#x8981;&#x6C42;&#x7684;&#x8282;&#x70B9;</li>
<li>PostFilter, &#x4E3B;&#x8981;&#x662F;&#x7528;&#x4E8E;&#x5904;&#x7406;&#x5F53; Pod &#x5728; Filter &#x9636;&#x6BB5;&#x5931;&#x8D25;&#x540E;&#x7684;&#x64CD;&#x4F5C;&#xFF0C;&#x4F8B;&#x5982;&#x62A2;&#x5360;&#xFF0C;Autoscale &#x89E6;&#x53D1;&#x7B49;&#x884C;&#x4E3A;&#x3002;</li>
<li>PreScore, &#x4E3B;&#x8981;&#x7528;&#x4E8E;&#x5728; Score &#x4E4B;&#x524D;&#x8FDB;&#x884C;&#x4E00;&#x4E9B;&#x4FE1;&#x606F;&#x751F;&#x6210;&#x3002;&#x6B64;&#x5904;&#x4F1A;&#x83B7;&#x53D6;&#x5230;&#x901A;&#x8FC7; Filter &#x9636;&#x6BB5;&#x7684;&#x8282;&#x70B9;&#x5217;&#x8868;&#xFF0C;&#x6211;&#x4EEC;&#x4E5F;&#x53EF;&#x4EE5;&#x5728;&#x6B64;&#x5904;&#x8FDB;&#x884C;&#x4E00;&#x4E9B;&#x4FE1;&#x606F;&#x9884;&#x5904;&#x7406;&#x6216;&#x8005;&#x751F;&#x6210;&#x4E00;&#x4E9B;&#x65E5;&#x5FD7;&#x6216;&#x8005;&#x76D1;&#x63A7;&#x4FE1;&#x606F;&#x3002;</li>
<li>Scoring, <strong>&#x662F; scheduler v1 &#x7248;&#x672C;&#x4E2D; Priority &#x7684;&#x903B;&#x8F91;</strong>&#xFF0C;&#x76EE;&#x7684;&#x662F;&#x4E3A;&#x4E86;&#x57FA;&#x4E8E; Filter &#x8FC7;&#x6EE4;&#x540E;&#x7684;&#x5269;&#x4F59;&#x8282;&#x70B9;&#xFF0C;&#x6839;&#x636E; Scoring &#x6269;&#x5C55;&#x70B9;&#x5B9A;&#x4E49;&#x7684;&#x7B56;&#x7565;&#x6311;&#x9009;&#x51FA;&#x6700;&#x4F18;&#x7684;&#x8282;&#x70B9;&#x3002;&#x5206;&#x4E3A;&#x4E24;&#x4E2A;&#x9636;&#x6BB5;&#xFF1A;<ol>
<li>&#x6253;&#x5206;&#xFF1A;&#x6253;&#x5206;&#x9636;&#x6BB5;&#x4F1A;&#x5BF9; Filter &#x540E;&#x7684;&#x8282;&#x70B9;&#x8FDB;&#x884C;&#x6253;&#x5206;&#xFF0C;scheduler &#x4F1A;&#x8C03;&#x7528;&#x6240;&#x914D;&#x7F6E;&#x7684;&#x6253;&#x5206;&#x7B56;&#x7565;</li>
<li>&#x5F52;&#x4E00;&#x5316;: &#x5BF9;&#x6253;&#x5206;&#x4E4B;&#x540E;&#x7684;&#x7ED3;&#x6784;&#x5728; 0-100 &#x4E4B;&#x95F4;&#x8FDB;&#x884C;&#x5F52;&#x4E00;&#x5316;&#x5904;&#x7406;</li>
</ol>
</li>
<li>Reserve, &#x662F; scheduler v1 &#x7248;&#x672C;&#x7684; assume &#x7684;&#x64CD;&#x4F5C;&#xFF0C;&#x6B64;&#x5904;&#x4F1A;&#x5BF9;&#x8C03;&#x5EA6;&#x7ED3;&#x679C;&#x8FDB;&#x884C;&#x7F13;&#x5B58;&#xFF0C;&#x5982;&#x679C;&#x5728;&#x540E;&#x8FB9;&#x7684;&#x9636;&#x6BB5;&#x53D1;&#x751F;&#x4E86;&#x9519;&#x8BEF;&#x6216;&#x8005;&#x5931;&#x8D25;&#x7684;&#x60C5;&#x51B5;&#xFF0C;&#x4F1A;&#x76F4;&#x63A5;&#x8FDB;&#x5165; Unreserve &#x9636;&#x6BB5;&#xFF0C;&#x8FDB;&#x884C;&#x6570;&#x636E;&#x56DE;&#x6EDA;&#x3002;</li>
<li>Permit, &#xFF0C;&#x5F53; Pod &#x5728; Reserve &#x9636;&#x6BB5;&#x5B8C;&#x6210;&#x8D44;&#x6E90;&#x9884;&#x7559;&#x4E4B;&#x540E;&#xFF0C;Bind &#x64CD;&#x4F5C;&#x4E4B;&#x524D;&#xFF0C;&#x5F00;&#x53D1;&#x8005;&#x53EF;&#x4EE5;&#x5B9A;&#x4E49;&#x81EA;&#x5DF1;&#x7684;&#x7B56;&#x7565;&#x5728; Permit &#x8282;&#x70B9;&#x8FDB;&#x884C;&#x62E6;&#x622A;&#xFF0C;&#x6839;&#x636E;&#x6761;&#x4EF6;&#x5BF9;&#x7ECF;&#x8FC7;&#x6B64;&#x9636;&#x6BB5;&#x7684; Pod &#x8FDB;&#x884C; allow&#x3001;reject &#x548C; wait &#x7684; 3 &#x79CD;&#x64CD;&#x4F5C;&#x3002;</li>
</ol>
<p>binding cycle, &#x9700;&#x8981;&#x8C03;&#x7528; apiserver &#x7684;&#x63A5;&#x53E3;&#xFF0C;&#x8017;&#x65F6;&#x8F83;&#x957F;&#xFF0C;&#x4E3A;&#x4E86;&#x63D0;&#x9AD8;&#x8C03;&#x5EA6;&#x7684;&#x6548;&#x7387;&#xFF0C;&#x9700;&#x8981;&#x5F02;&#x6B65;&#x6267;&#x884C;&#xFF0C;&#x6240;&#x4EE5;&#x6B64;&#x9636;&#x6BB5;&#x7EBF;&#x7A0B;&#x4E0D;&#x5B89;&#x5168;&#x3002;</p>
<ol>
<li>Bind, &#x662F; scheduler v1 &#x7248;&#x672C;&#x4E2D;&#x7684; Bind &#x64CD;&#x4F5C;&#xFF0C;&#x4F1A;&#x8C03;&#x7528; apiserver &#x63D0;&#x4F9B;&#x7684;&#x63A5;&#x53E3;&#xFF0C;&#x5C06; pod &#x7ED1;&#x5B9A;&#x5230;&#x5BF9;&#x5E94;&#x7684;&#x8282;&#x70B9;&#x4E0A;&#x3002;</li>
<li>PreBind &#x548C; PostBind, &#x5728; PreBind &#x548C; PostBind &#x5206;&#x522B;&#x5728; Bind &#x64CD;&#x4F5C;&#x524D;&#x540E;&#x6267;&#x884C;&#xFF0C;&#x8FD9;&#x4E24;&#x4E2A;&#x9636;&#x6BB5;&#x53EF;&#x4EE5;&#x8FDB;&#x884C;&#x4E00;&#x4E9B;&#x6570;&#x636E;&#x4FE1;&#x606F;&#x7684;&#x83B7;&#x53D6;&#x548C;&#x66F4;&#x65B0;&#x3002;</li>
<li>UnReserve, &#x7528;&#x4E8E;&#x6E05;&#x7406;&#x5230; Reserve &#x9636;&#x6BB5;&#x7684;&#x7684;&#x7F13;&#x5B58;&#xFF0C;&#x56DE;&#x6EDA;&#x5230;&#x521D;&#x59CB;&#x7684;&#x72B6;&#x6001;&#x3002;&#x5F53;&#x524D;&#x7248;&#x672C; UnReserve &#x4E0E; Reserve &#x662F;&#x5206;&#x5F00;&#x5B9A;&#x4E49;&#x7684;&#xFF0C;&#x672A;&#x6765;&#x4F1A;&#x5C06; UnReserve &#x4E0E; Reserve &#x7EDF;&#x4E00;&#x5230;&#x4E00;&#x8D77;&#xFF0C;&#x5373;&#x8981;&#x6C42;&#x5F00;&#x53D1;&#x8005;&#x5728;&#x5B9E;&#x73B0; Reserve &#x540C;&#x65F6;&#x9700;&#x8981;&#x5B9A;&#x4E49; UnReserve&#xFF0C;&#x4FDD;&#x8BC1;&#x6570;&#x636E;&#x80FD;&#x591F;&#x6709;&#x6548;&#x7684;&#x6E05;&#x7406;&#xFF0C;&#x907F;&#x514D;&#x7559;&#x4E0B;&#x810F;&#x6570;&#x636E;&#x3002;</li>
</ol>
<p>&#x63D2;&#x4EF6;&#x89C4;&#x8303;&#x5B9A;&#x4E49;&#x5728; <code>$GOPATH/src/k8s.io/kubernetes/pkg/scheduler/framework/v1alpha1/interface.go</code> &#x4E2D;&#xFF0C;&#x5404;&#x7C7B;&#x63D2;&#x4EF6;&#x7EE7;&#x627F; Plugin</p>
<pre class="language-"><code>type Plugin interface {
    Name() string
}
type PreFilterPlugin interface {
    Plugin
    // PreFilter is called at the beginning of the scheduling cycle. All PreFilter plugins must return success or the pod will be rejected.
    PreFilter(ctx context.Context, state *CycleState, p *v1.Pod) *Status
    // PreFilterExtensions returns a PreFilterExtensions interface if the plugin implements one,or nil if it does not. A Pre-filter plugin can provide extensions to incrementally modify its pre-processed info. The framework guarantees that the extensions
    // AddPod/RemovePod will only be called after PreFilter, possibly on a cloned CycleState, and may call those functions more than once before calling Filter again on a specific node.
    PreFilterExtensions() PreFilterExtensions
}
</code></pre><p><a href="https://mp.weixin.qq.com/s/UkVXuZU0E0LT3LaDdZG4Xg" target="_blank">Kubernetes scheduling framework</a>Kubernetes &#x8D1F;&#x8D23; Kube-scheduler &#x7684;&#x5C0F;&#x7EC4; sig-scheduling &#x4E3A;&#x4E86;&#x66F4;&#x597D;&#x7684;&#x7BA1;&#x7406;&#x8C03;&#x5EA6;&#x76F8;&#x5173;&#x7684; Plugin&#xFF0C;&#x65B0;&#x5EFA;&#x4E86;&#x9879;&#x76EE; scheduler-plugins &#x6765;&#x65B9;&#x4FBF;&#x7528;&#x6237;&#x7BA1;&#x7406;&#x4E0D;&#x540C;&#x7684;&#x63D2;&#x4EF6;&#x3002;</p>
<pre class="language-"><code>github.com/kubernetes-sigs/scheduler-plugins
    /pkg
        /qos
            /queue_sort.go  // &#x63D2;&#x4EF6;&#x5B9E;&#x73B0;
k8s.io/kubernetes
    /cmd
        /kube-scheduler
            /scheduler.go   // &#x63D2;&#x4EF6;&#x6CE8;&#x518C;
</code></pre><p>&#x4EE5;&#x5176;&#x4E2D;&#x7684; Qos &#x7684;&#x63D2;&#x4EF6;&#x6765;&#x4E3A;&#x4F8B;&#xFF0C;Qos &#x7684;&#x63D2;&#x4EF6;&#x4E3B;&#x8981;&#x57FA;&#x4E8E; Pod &#x7684; QoS(Quality of Service) class &#x6765;&#x5B9E;&#x73B0;&#x7684;&#xFF0C;&#x76EE;&#x7684;&#x662F;&#x4E3A;&#x4E86;&#x5B9E;&#x73B0;&#x8C03;&#x5EA6;&#x8FC7;&#x7A0B;&#x4E2D;&#x5982;&#x679C; Pod &#x7684;&#x4F18;&#x5148;&#x7EA7;&#x76F8;&#x540C;&#x65F6;&#xFF0C;&#x6839;&#x636E; Pod &#x7684; Qos &#x6765;&#x51B3;&#x5B9A;&#x8C03;&#x5EA6;&#x987A;&#x5E8F;&#x3002; &#x6CE8;&#x518C;&#x903B;&#x8F91;&#x5982;&#x4E0B;</p>
<pre class="language-"><code>// scheduler.go
func main() {
    rand.Seed(time.Now().UnixNano())
    command := app.NewSchedulerCommand(
        app.WithPlugin(qos.Name, qos.New),  // &#x8FD9;&#x4E00;&#x884C;&#x4E3A;&#x65B0;&#x589E;&#x7684;&#x6CE8;&#x518C;&#x4EE3;&#x7801;
    )
    pflag.CommandLine.SetNormalizeFunc(cliflag.WordSepNormalizeFunc)
    logs.InitLogs()
    defer logs.FlushLogs()
    if err := command.Execute(); err != nil {
        os.Exit(1)
    }
}
</code></pre><h2 id="&#x4EE3;&#x7801;&#x5206;&#x6790;"><a name="&#x4EE3;&#x7801;&#x5206;&#x6790;" class="anchor-navigation-ex-anchor" href="#&#x4EE3;&#x7801;&#x5206;&#x6790;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x4EE3;&#x7801;&#x5206;&#x6790;</h2>
<p><img src="https://cai-hello-1253732611.cos.ap-shanghai.myqcloud.com/share/205402.png" alt="img"></p>
<p><a href="https://jvns.ca/blog/2017/07/27/how-does-the-kubernetes-scheduler-work/" target="_blank">How does the Kubernetes scheduler work?</a></p>
<p><img src="https://cai-hello-1253732611.cos.ap-shanghai.myqcloud.com/share/205406.png" alt="img"></p>
<pre class="language-"><code>sched, err := scheduler.New(cc.Client,
    cc.InformerFactory,
    cc.PodInformer,
    recorderFactory,
    ctx.Done(),
    scheduler.WithProfiles(cc.ComponentConfig.Profiles...),
    scheduler.WithAlgorithmSource(cc.ComponentConfig.AlgorithmSource),
    scheduler.WithPreemptionDisabled(cc.ComponentConfig.DisablePreemption),
    scheduler.WithPercentageOfNodesToScore(cc.ComponentConfig.PercentageOfNodesToScore),
    scheduler.WithBindTimeoutSeconds(cc.ComponentConfig.BindTimeoutSeconds),
    scheduler.WithFrameworkOutOfTreeRegistry(outOfTreeRegistry),
    scheduler.WithPodMaxBackoffSeconds(cc.ComponentConfig.PodMaxBackoffSeconds),
    scheduler.WithPodInitialBackoffSeconds(cc.ComponentConfig.PodInitialBackoffSeconds),
    scheduler.WithExtenders(cc.ComponentConfig.Extenders...),
  )
</code></pre><p>&#x5728;&#x521B;&#x5EFA;Scheduler&#x7684;New&#x51FD;&#x6570;&#x91CC;&#x9762;&#xFF0C;&#x505A;&#x4E86;&#x4EE5;&#x4E0B;&#x51E0;&#x4EF6;&#x4E8B;&#x60C5;&#xFF1A;</p>
<ol>
<li>&#x521B;&#x5EFA;SchedulerCache&#xFF0C;&#x8FD9;&#x91CC;&#x9762;&#x6709;podStates&#x4FDD;&#x5B58;Pod&#x7684;&#x72B6;&#x6001;&#xFF0C;&#x6709;nodes&#x4FDD;&#x5B58;&#x8282;&#x70B9;&#x7684;&#x72B6;&#x6001;&#xFF0C;&#x6574;&#x4E2A;&#x8C03;&#x5EA6;&#x4EFB;&#x52A1;&#x662F;&#x5B8C;&#x6210;&#x4E24;&#x8005;&#x7684;&#x5339;&#x914D;&#x3002;</li>
<li>&#x521B;&#x5EFA;volumeBinder&#xFF0C;&#x56E0;&#x4E3A;&#x8C03;&#x5EA6;&#x5F88;&#x5927;&#x7A0B;&#x5EA6;&#x4E0A;&#x548C;Volume&#x662F;&#x76F8;&#x5173;&#x7684;&#xFF0C;&#x6709;&#x53EF;&#x80FD;&#x56E0;&#x4E3A;&#x8981;&#x6C42;&#x67D0;&#x4E2A;Pod&#x9700;&#x8981;&#x6EE1;&#x8DB3;&#x4E00;&#x5B9A;&#x5927;&#x5C0F;&#x6216;&#x8005;&#x6761;&#x4EF6;&#x7684;Volume&#xFF0C;&#x800C;&#x8FD9;&#x4E9B;Volume&#x53EA;&#x80FD;&#x5728;&#x67D0;&#x4E9B;&#x8282;&#x70B9;&#x4E0A;&#x624D;&#x80FD;&#x88AB;&#x6302;&#x8F7D;&#x3002;</li>
<li>&#x521B;&#x5EFA;&#x8C03;&#x5EA6;&#x961F;&#x5217;&#xFF0C;&#x5C06;&#x6765;&#x5C1A;&#x672A;&#x8C03;&#x5EA6;&#x7684;Pod&#x90FD;&#x4F1A;&#x653E;&#x5728;&#x8FD9;&#x4E2A;&#x961F;&#x5217;&#x91CC;&#x9762;</li>
<li>&#x521B;&#x5EFA;&#x8C03;&#x5EA6;&#x7B97;&#x6CD5;&#xFF0C;&#x5C06;&#x6765;&#x8FD9;&#x4E2A;&#x5BF9;&#x8C61;&#x7684;Schedule&#x51FD;&#x6570;&#x4F1A;&#x88AB;&#x8C03;&#x7528;&#x8FDB;&#x884C;&#x8C03;&#x5EA6;</li>
<li>&#x521B;&#x5EFA;&#x8C03;&#x5EA6;&#x5668;&#xFF0C;&#x7EC4;&#x5408;&#x4E0A;&#x9762;&#x6240;&#x6709;&#x7684;&#x5BF9;&#x8C61;</li>
<li>addAllEventHandlers&#xFF0C;&#x6DFB;&#x52A0;&#x4E8B;&#x4EF6;&#x5904;&#x7406;&#x5668;&#x3002;&#x5982;&#x679C;Pod&#x5DF2;&#x7ECF;&#x8C03;&#x5EA6;&#x8FC7;&#xFF0C;&#x53D1;&#x751F;&#x53D8;&#x5316;&#x5219;&#x66F4;&#x65B0;Cache&#xFF0C;&#x5982;&#x679C;Node&#x53D1;&#x751F;&#x53D8;&#x5316;&#x66F4;&#x65B0;Cache&#xFF0C;&#x5982;&#x679C;Pod&#x6CA1;&#x6709;&#x8C03;&#x5EA6;&#x8FC7;&#xFF0C;&#x5219;&#x653E;&#x5165;&#x961F;&#x5217;&#x4E2D;&#x7B49;&#x5F85;&#x8C03;&#x5EA6;&#xFF0C;PV&#x548C;PVC&#x53D1;&#x751F;&#x53D8;&#x5316;&#x4E5F;&#x4F1A;&#x505A;&#x76F8;&#x5E94;&#x7684;&#x5904;&#x7406;&#x3002;</li>
</ol>
<p>&#x521B;&#x5EFA;&#x4E86;Scheduler&#x4E4B;&#x540E;&#xFF0C;&#x63A5;&#x4E0B;&#x6765;&#x662F;&#x8C03;&#x7528;Scheduler&#x7684;Run&#x51FD;&#x6570;&#xFF0C;&#x8FD0;&#x884C;scheduleOne&#x8FDB;&#x884C;&#x8C03;&#x5EA6;&#x3002;</p>
<ol>
<li>&#x4ECE;&#x961F;&#x5217;&#x4E2D;&#x83B7;&#x53D6;&#x4E0B;&#x4E00;&#x4E2A;&#x8981;&#x8C03;&#x5EA6;&#x7684;Pod</li>
<li>&#x6839;&#x636E;&#x8C03;&#x5EA6;&#x7B97;&#x6CD5;&#xFF0C;&#x9009;&#x62E9;&#x51FA;&#x5408;&#x9002;&#x7684;Node&#xFF0C;&#x653E;&#x5728;scheduleResult&#x4E2D;</li>
<li>&#x5728;&#x672C;&#x5730;&#x7F13;&#x5B58;&#x4E2D;&#xFF0C;&#x5148;&#x7ED1;&#x5B9A;Volume&#xFF0C;&#x771F;&#x6B63;&#x7684;&#x7ED1;&#x5B9A;&#x8981;&#x8C03;&#x7528;API Server&#x5C06;&#x7ED1;&#x5B9A;&#x4FE1;&#x606F;&#x653E;&#x5728;ETCD&#x91CC;&#x9762;&#xFF0C;&#x4F46;&#x662F;&#x56E0;&#x4E3A;&#x8C03;&#x5EA6;&#x5668;&#x4E0D;&#x80FD;&#x7B49;&#x5199;&#x5165;ETCD&#x540E;&#x518D;&#x8C03;&#x5EA6;&#x4E0B;&#x4E00;&#x4E2A;&#xFF0C;&#x8FD9;&#x6837;&#x592A;&#x6162;&#x4E86;&#xFF0C;&#x56E0;&#x800C;&#x5728;&#x672C;&#x5730;&#x7F13;&#x5B58;&#x4E2D;&#x7ED1;&#x5B9A;&#x540E;&#xFF0C;&#x540C;&#x4E00;&#x4E2A;Volume&#xFF0C;&#x5176;&#x4ED6;&#x7684;Pod&#x8C03;&#x5EA6;&#x7684;&#x65F6;&#x5019;&#x5C31;&#x4E0D;&#x4F1A;&#x4F7F;&#x7528;&#x4E86;&#x3002;</li>
<li>&#x5728;&#x672C;&#x5730;&#x7F13;&#x5B58;&#x4E2D;&#xFF0C;&#x7ED1;&#x5B9A;Node&#xFF0C;&#x539F;&#x56E0;&#x7C7B;&#x4F3C;</li>
<li>&#x901A;&#x8FC7;API Server&#x7684;&#x5BA2;&#x6237;&#x7AEF;&#x505A;&#x771F;&#x6B63;&#x7684;&#x7ED1;&#x5B9A;&#xFF0C;&#x662F;&#x5F02;&#x6B65;&#x64CD;&#x4F5C;</li>
</ol>
<p>&#x63A5;&#x4E0B;&#x6765;&#x6211;&#x4EEC;&#x6765;&#x770B;&#x8C03;&#x5EA6;&#x7B97;&#x6CD5;&#x7684;Schedule&#x51FD;&#x6570;&#xFF0C;Schedule&#x7B97;&#x6CD5;&#x505A;&#x4E86;&#x4EE5;&#x4E0B;&#x7684;&#x4E8B;&#x60C5;&#xFF1A;</p>
<ol>
<li>findNodesThatFitPod&#xFF1A;&#x6839;&#x636E;&#x6240;&#x6709;&#x9884;&#x9009;&#x7B97;&#x6CD5;&#x8FC7;&#x6EE4;&#x7B26;&#x5408;&#x7684;node&#x5217;&#x8868;</li>
<li>prioritizeNodes: &#x5BF9;&#x7B26;&#x5408;&#x7684;&#x8282;&#x70B9;&#x8FDB;&#x884C;&#x4F18;&#x9009;&#x8BC4;&#x5206;&#xFF0C;&#x4E00;&#x4E2A;&#x6392;&#x5E8F;&#x7684;&#x5217;&#x8868;</li>
<li>selectHost&#xFF1A;&#x5BF9;&#x4F18;&#x9009;&#x7684; node &#x5217;&#x8868;&#x9009;&#x62E9;&#x4E00;&#x4E2A;&#x6700;&#x4F18;&#x7684;&#x8282;&#x70B9;</li>
</ol>
<p><img src="https://cai-hello-1253732611.cos.ap-shanghai.myqcloud.com/share/205411.png" alt="img"></p>
<p>Link:</p>
<ul>
<li><a href="https://www.servicemesher.com/blog/202003-k8s-scheduling-framework/" target="_blank">service mesh &#x5357;&#x4EAC;&#x90AE;&#x7535;</a> </li>
</ul>
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